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LCD Structure of thin film transistor

A technology of thin film transistors and liquid crystal displays, which is applied in instruments, nonlinear optics, optics, etc., can solve problems such as light leakage, adverse effects on display effects, and impact on the yield of liquid crystal panels.

Active Publication Date: 2007-05-16
K TRONICS (SUZHOU) TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that in the traditional TFT LCD device, since the contact position between the columnar spacer and the TFT substrate is above the TFT device, which belongs to the highest position in the TFT substrate, when the panel is squeezed or impacted, the spacer will automatically Move to a lower position, and it is difficult to return to the original position, which will cause light leakage, which seriously affects the yield rate of the LCD panel and has a negative impact on the display effect

Method used

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  • LCD Structure of thin film transistor
  • LCD Structure of thin film transistor
  • LCD Structure of thin film transistor

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Experimental program
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specific Embodiment 1

[0030] The TFT LCD structure of the present invention includes: a color filter substrate and a thin film transistor array substrate, the liquid crystal layer is packaged between the color filter substrate and the thin film transistor array substrate, and the column spacer is provided with the color filter substrate Between the thin film transistor array substrate to maintain the thickness of the box between the panels.

[0031] Figure 3a is a top view of a TFT LCD according to a specific embodiment of the present invention after box alignment, in which there is a group of gate scanning lines 1 and common electrodes 12 parallel to them on the thin film transistor array substrate, and a group of data scanning lines perpendicular to them. Line 5. Adjacent gate scan lines and data scan lines define pixel regions. Each pixel includes a TFT switch device, a transparent pixel electrode 10 , two light-shielding strips 11 and part of a common electrode 12 . As shown in FIG. 3 c , the...

specific Embodiment 2

[0044] In the specific embodiment 1, the pixel electrode contacted by the top of the columnar spacer is on the passivation layer, as shown in Figure 3b, 3c, in the specific embodiment 2, the passivation layer and the The gate insulating layer is removed, and the pixel electrodes contacted by the tops of the columnar spacers are on the glass substrate, as shown in FIG. 6a and FIG. 6b. There is a certain slope angle at the via hole, the size is 20-90 degrees. The advantage of this design is that the end difference around the columnar spacer is increased, and the movement of the columnar spacer is better restricted. Corresponding to this design, in order to maintain the same cell thickness as in Embodiment 1, the height of the columnar spacers needs to be increased, and the added value is equal to the sum of the thicknesses of the passivation layer and the gate insulating layer. Of course, the depth of the via hole can also be smaller than the "sum of the thicknesses of the pass...

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Abstract

This invention discloses one film transistor LCD structure, which comprises the following parts: one film transducer array baseboard and color filter baseboard, column pad set between two baseboards, wherein, the film transducer array baseboard comprises one panel with column pad object at film array baseboard transducer leakage electrode, data scanning line and grating scan lines; the bottom end is on color filter slice and leakage of film transducer, data scan line and grating scan line relative positions.

Description

technical field [0001] The invention relates to a TFT LCD (thin film transistor liquid crystal display) structure, in particular to a TFT LCD structure in which the position and structure of columnar spacers change. Background technique [0002] Among flat panel display technologies, TFT LCD has the characteristics of low power consumption, relatively low manufacturing cost and no radiation, so it occupies a dominant position in the flat panel display market. The TFT LCD device is formed by combining an array glass substrate and a color filter glass substrate, and injecting liquid crystal into it. Columnar spacers are usually made on the color filter glass plate to maintain the thickness of the cell. [0003] As shown in FIG. 1 a , it is a schematic structural diagram of a typical cell-aligned TFT LCD in the prior art. The Array (array) substrate of the TFT LCD has a group of gate scan lines 1 and common electrode leads 12 parallel thereto, and a group of data scan lines 5...

Claims

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Application Information

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IPC IPC(8): G02F1/1339G02F1/1362G02F1/1335G02F1/1333
Inventor 崔佳宁龙春平
Owner K TRONICS (SUZHOU) TECH CO LTD