• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A liquid crystal display device is provided to prevent impurities from flowing into pixels of a screen display area, thereby preventing mura phenomenon at a liquid crystal injecting port. CONSTITUTION: A sealant line(12) is formed on a substrate(10). A screen display area(14) is formed on the substrate. Gate lines, data lines and common lines are formed on the screen display area. Gate line pads(16), data line pads(18), and a common line pad(20) are formed on an area except the screen display area. A plurality of dummy electrodes(22) are formed between the screen display area and the common line pad or on the common line pad. Each dummy electrode is made out of a conductive material, and is composed of a plurality of gate line-dummy electrode pieces connected with the common lines, and a plurality of common line-dummy electrode pieces connected with the common line pad. The dummy electrodes absorb ion or impurities in injecting liquid crystal.
    公开号:KR20030028972A
    申请号:KR1020010061429
    申请日:2001-10-05
    公开日:2003-04-11
    发明作者:김귀현；박승익；이경하
    申请人:비오이 하이디스 테크놀로지 주식회사；
    IPC主号:
    专利说明:

    Liquid Crystal Display {APPARATUS FOR LIQUID CRYSTAL DISPLAY}
    [14] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device in which a screen quality is improved by removing the mura phenomenon of the liquid crystal inlet.
    [15] BACKGROUND ART In general, a liquid crystal display device is an apparatus for realizing an image by changing an arrangement of liquid crystals by applying an electric field to a liquid crystal between upper and lower substrates, and is used in various display devices including a monitor of a notebook computer in place of a conventional cathode ray tube.
    [16] Conventionally, a liquid crystal display device is completed by injecting liquid crystal between substrates bonded for a long time by using capillary phenomenon and pressure difference in a state where upper and lower substrates are bonded.
    [17] However, the liquid crystal display according to the prior art has the following problems.
    [18] In the prior art, as shown in FIG. 1, a sealant line 5 is drawn around the liquid crystal panel 1 except for the injection hole 3, and the end seals are formed so that the liquid crystal is not ejected to the outside. 7: The inlet is sealed with an end seal. However, when the liquid crystal is injected, impurities in addition to the liquid crystal are included. Therefore, when DC is present in the screen display area, the Mura phenomenon, which is brighter than the surroundings, occurs due to the effect of ions or impurities in the injection hole area. There is a problem with knocking down.
    [19] Accordingly, the present invention has been made to solve the problems of the prior art, the object of the present invention is to arrange the dummy electrode and the discharge circuit around the liquid crystal injection port to adsorb ions or impurities during the liquid crystal injection to improve the screen quality An improved liquid crystal display device is provided.
    [1] 1 is a plan view of a liquid crystal display according to the prior art.
    [2] 2 is a plan view of a liquid crystal display according to Embodiment 1 of the present invention;
    [3] 3 is a plan view of a liquid crystal display according to a second exemplary embodiment of the present invention.
    [4] 4 is a plan view of a liquid crystal display according to a third embodiment of the present invention.
    [5] Explanation of symbols on the main parts of the drawings
    [6] 10: substrate 12: silent line
    [7] 14: display area 15: gate line
    [8] 16: gate line pad 17: data line
    [9] 18: Data line pad 19: Common line
    [10] 20: common line pad 22: dummy electrode
    [11] 22a: gate line-dummy electrode 22b: common line-dummy electrode
    [12] 22c: data line-dummy electrode 24: end seal
    [13] 26a, 26b, 26c: via hole
    [20] According to an aspect of the present invention, a liquid crystal display device includes: a substrate on which a silent line is formed; A screen display area in which gate lines, data lines, and common lines are formed on the substrate; A gate line pad, a data line pad, and a common line pad formed outside the screen display area; And a dummy electrode formed of a conductor between the screen display area and the common line pad or on the common line pad.
    [21] Hereinafter, a liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.
    [22] 2 is a plan view of a liquid crystal display device according to Embodiment 1 of the present invention, FIG. 3 is a plan view of a liquid crystal display device according to Embodiment 2 of the present invention, and FIG. 4 is a liquid crystal display device according to Embodiment 3 of the present invention. Top view of the.
    [23] In the liquid crystal display according to the first exemplary embodiment of the present invention, as shown in FIG. 2, a gate line (not shown), a data line (not shown), and a common line are disposed on a substrate 10 on which a silent line 12 is formed. A screen display area 14 having lines (not shown), a gate line pad 16, a data line pad 18, a common line pad 20, and the screen display formed outside the screen display area 14. And a dummy electrode 22 formed of a conductor between the region 14 and the common line pad 20 or on the common line pad 20.
    [24] Here, a gate line (not shown), a data line (not shown), and a common line (not shown) may be formed from the gate line pad 16, the data line pad 18, and the common line pad 20, respectively. Extended to (14).
    [25] In addition, the dummy electrode 22 extends beyond the sealant line 12 to a region where the data pad 18 is formed, and may be electrically conductive so that a bias can be applied from the outside. Is composed of metal, indium tin oxide (ITO) or doped amorphous silicon.
    [26] In the above structure, when an AC voltage or a DC voltage of several to several tens of volts, for example, 1 to 100 volts is applied to the dummy electrode 22 from the outside during liquid crystal injection, as shown in A of FIG. Ions, impurities, and the like are adsorbed to the dummy electrode 22 or discharged to the outside.
    [27] On the other hand, the liquid crystal inlet is sealed by the end seal 24.
    [28] In the liquid crystal display according to the second exemplary embodiment of the present invention, as shown in FIG. 3, a plurality of gate lines 15, data lines 17, and common lines 19 in a matrix form in the screen display area 14. Is arranged. On the other hand, the dummy electrode 22 is formed between the common line pad 20 and the screen display area 14, the dummy electrode 22 is a plurality of gate line-dummy electrode piece 22a and common line- It consists of dummy electrode pieces 22b.
    [29] The gate line-dummy electrode piece 22a is connected to the gate line 15 by a first via hole 26a, and the common line-dummy electrode piece 22b is connected to the second via hole 26b. Are connected by.
    [30] In the above structure, a strong electric field is formed on the dummy electrode 22 by the voltages of the gate line 15 and the common line 19. The electric field effectively absorbs or discharges ions or impurities remaining near the liquid crystal inlet to be sealed by the end seal 24 to the dummy electrode 22 during the initial process.
    [31] In the liquid crystal display according to the third exemplary embodiment of the present invention, as shown in FIG. 4, the gate lines 15, the data lines 17, and the common lines 19 in a matrix form in the screen display area 14. Is arranged. On the other hand, the dummy electrode 22 is formed between the common line pad 20 and the screen display area 14, the dummy electrode 22 is a plurality of common line-dummy electrode piece 22b and data line- It consists of dummy electrode pieces 22c.
    [32] Here, the common line-dummy electrode piece 22b is connected to the common line 19 by a second via hole 26b, and the data line-dummy electrode piece 22c is connected to the third via hole 26c. Are connected by.
    [33] The structure as described above is for applying the voltage of the data line 17 to the dummy electrode 22, as well as the DC voltage as in the second embodiment, the voltage of the data line 17 and the common line 19. The difference in voltage, i.e., positive and negative alternating voltage (AC) is also applied.
    [34] Therefore, even when DC stress is applied for a long time, not only does the AC electric field prevent deterioration of the liquid crystal by DC, but also adsorbs ions or impurities and removes the influence of the surrounding DC.
    [35] Various embodiments can be easily implemented as well as self-explanatory to those skilled in the art without departing from the principles and spirit of the present invention. Accordingly, the claims appended hereto are not limited to those already described above, and the following claims encompass all patentable new matters inherent in the invention, and are common in the art to which the invention pertains. Includes all features that are processed evenly by the knowledgeable.
    [36] As described above, the liquid crystal display according to the present invention has the following effects.
    [37] In the present invention, by placing a conductive layer dummy electrode and a discharge circuit in the liquid crystal inlet to adsorb ions or impurities during liquid crystal injection, impurities can be prevented from entering the screen display area pixels in the liquid crystal panel. It is effective to prevent mura phenomenon and improve screen quality.
    [38] In addition, as in the screen display area, the conductive layer dummy electrode is applied with an AC voltage to the liquid crystal to prevent deterioration of the liquid crystal, thereby maintaining an excellent screen quality when operating for a long time.
    权利要求:
    Claims (5)
    [1" claim-type="Currently amended] A substrate on which a sealant line is formed;
    A screen display area in which gate lines, data lines, and common lines are formed on the substrate;
    A gate line pad, a data line pad, and a common line pad formed outside the screen display area; And
    And a dummy electrode formed of a conductor between the screen display area and the common line pad or on the common line pad.
    [2" claim-type="Currently amended] The method of claim 1,
    And the dummy electrode is formed of a metal, an indium tin oxide, or a doped amorphous silicon layer.
    [3" claim-type="Currently amended] The method of claim 1,
    The dummy electrode is a liquid crystal display, characterized in that the alternating current and DC voltage of 1 to 100 volts is applied from the outside.
    [4" claim-type="Currently amended] The method of claim 1,
    The dummy electrode is formed between the screen display area and the common line pad, and the dummy electrode is connected to a plurality of gate line-dummy electrode pieces connected to the gate line in the screen display area and the common line in the screen display area. And a common line-dummy electrode funnel, wherein the common line-dummy electrode piece is connected to the common line pad.
    [5" claim-type="Currently amended] The method of claim 1,
    The dummy electrode is formed between the screen display area and the common line pad, wherein the dummy electrode is connected to a plurality of data line-dummy electrode pieces connected to data lines in the screen display area and a common line in the screen display area. And a common line-dummy electrode funnel, wherein the common line-dummy electrode piece is connected to the common line pad.
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    同族专利:
    公开号 | 公开日
    KR100494695B1|2005-06-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2001-10-05|Application filed by 비오이 하이디스 테크놀로지 주식회사
    2001-10-05|Priority to KR10-2001-0061429A
    2003-04-11|Publication of KR20030028972A
    2005-06-13|Application granted
    2005-06-13|Publication of KR100494695B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR10-2001-0061429A|KR100494695B1|2001-10-05|2001-10-05|Apparatus for liquid crystal display|
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