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Color filter substrate and liquid crystal display device

A technology for liquid crystal display devices and color filter substrates, which is applied in the directions of instruments, filters, optics, etc., and can solve the problems of liquid crystal alignment disorder, light leakage, and contrast reduction.

Inactive Publication Date: 2011-05-04
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the color filter substrate is applied to a liquid crystal display device, the level of the color filter substrate becomes an important factor causing the alignment disorder of the liquid crystal.
If the portion where the alignment of the liquid crystal is disordered is located in the opening of the picture element, light leakage occurs from this portion and the contrast decreases

Method used

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  • Color filter substrate and liquid crystal display device
  • Color filter substrate and liquid crystal display device
  • Color filter substrate and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0053] The liquid crystal display device of Embodiment 1 is a TN-mode liquid crystal display device including a TFT substrate and a color filter substrate facing each other, and a gap between the two substrates is fixedly maintained by a laminated spacer. In addition, the TFT substrate and the color filter substrate are bonded by a sealant, and a liquid crystal material containing liquid crystal molecules having positive dielectric constant anisotropy is filled between the two substrates to form a liquid crystal layer. The liquid crystal layer exhibits a horizontal alignment mode in which liquid crystal molecules are aligned parallel to the two substrates in a state where no voltage is applied between the two substrates. In addition, the TFT substrate has a general structure, for example, wiring such as source lines, gate lines, and Cs lines (storage capacity wiring), TFTs as switching elements, insulating layers, pixel electrodes, and alignment films on the substrate.

[0054...

Embodiment approach 2

[0079] The liquid crystal display device of Embodiment 2 is, like the liquid crystal display device of Embodiment 1, a TN mode liquid crystal display device including a TFT substrate and a color filter substrate facing each other. figure 2 It is a schematic diagram showing the color filter substrate of Embodiment 2, (a) is a plan view, and (b) is a cross-sectional view taken along line X2-Y2 in (a). exist figure 2 In , the same reference numerals are assigned to the same components as those in Embodiment 1, and description thereof will be omitted.

[0080] Such as figure 2 As shown, the color filter substrate 20 according to Embodiment 2 includes, on one main surface side (the liquid crystal layer side) of the transparent substrate 11 : a black matrix 12 as a light-shielding layer having openings for picture elements; Picture element coloring layer (red) 13R, picture element picture element coloring layer (green) 13G, and picture element coloring layer (blue) 13B; laminat...

Embodiment approach 3

[0085] The liquid crystal display device of Embodiment 3 is, like the liquid crystal display devices of Embodiments 1 and 2, a TN mode liquid crystal display device including a TFT substrate and a color filter substrate facing each other. Image 6 It is a schematic plan view showing the color filter substrate of the third embodiment. in addition, Figure 7 is a schematic plan view showing a comparative example of the color filter substrate of Embodiment 3, Figure 8 It is a schematic diagram which shows the comparative example of the color filter board|substrate of Embodiment 3, (a) is a plan view, (b) is the cross-sectional view of the X4-Y4 line in (a). exist Figure 6-8 In , the same reference numerals are assigned to the same components as those in Embodiment 1, and description thereof will be omitted.

[0086] Such as Image 6 As shown, the color filter substrate 30 of the third embodiment includes, on one main surface side (the liquid crystal layer side) of the trans...

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Abstract

Provided are a color filter substrate and a liquid crystal display device capable of, even when a colored layer is used as the base portion of a multi-layer spacer, suppressing the occurrence of the orientational fluctuations of a liquid crystal in the vicinity of the multi-layer spacer without increasing the process steps. The color filter substrate comprises a first picture element colored layer, a light shielding layer, and a second picture element colored layer disposed side by side on the substrate and is formed as follows. The light shielding layer includes a first wide width portion and is disposed so as to partially overlap the edges of the first picture element colored layer and the second picture element colored layer. The first wide width portion includes a projection portion projected toward the first picture element colored layer. The color filter substrate includes a first multi-layer spacer, including the first wide width portion and a first spacer colored layer. The first spacer colored layer has the same color as that of the first picture element colored layer and is connected to the first picture element colored layer only at the crotch of the projection portion.

Description

technical field [0001] The present invention relates to a color filter substrate and a liquid crystal display device. More specifically, it relates to a color filter substrate suitable for use in a liquid crystal display device including a laminated spacer, and a liquid crystal display device including the color filter substrate. Background technique [0002] The color filter substrate has colored layers such as red (R), blue (B), and green (G), and functions as a color display in display devices such as liquid crystal display devices. The liquid crystal display device uses the liquid crystal layer filled in the liquid crystal display panel to control the optical characteristics of the light emitted from the light source to display, and generally has an active matrix substrate, a color filter substrate, and a liquid crystal layer sandwiched between them. The thickness of the liquid crystal layer (cell gap) is maintained by spacers arranged between the substrates. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02F1/1335G02F1/1339
CPCG02B5/201G02F1/133512G02F1/133514G02F1/13394
Inventor 小原安弘坂田徹西内诚
Owner SHARP KK