Liquid crystal display

A liquid crystal display device, liquid crystal technology, applied in the direction of static indicators, nonlinear optics, instruments, etc., can solve the problems of not obtaining, improving the aperture ratio, etc., and achieve the effect of improving orientation stability and optical characteristics

Inactive Publication Date: 2004-02-25
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of using an inclined electric field for orientation control, a speci

Method used

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  • Liquid crystal display
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Experimental program
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Embodiment 1

[0094] First, the electrode structure of the liquid crystal display device of the present invention and its function are described. The liquid crystal display device of the present invention has ideal display characteristics, and thus can be suitably used as an active matrix type liquid crystal display device. Embodiments of the present invention concerning an active matrix type liquid crystal display device using thin film transistors (TFTs) will now be described. However, the present invention is not limited thereto, and can also be used with an active matrix type liquid crystal display device having a MIM structure. In addition, while the embodiments of the present invention are described in terms of a transmissive liquid crystal display device, the present invention is not limited thereto, and may be additionally used with a reflective liquid crystal display device, and may even be additionally used with a transmissive-reflective liquid crystal display device described lat...

Embodiment 2

[0171] now refer to Figure 16A with Figure 16B The structure of one picture element region of the liquid crystal display device 200 according to Embodiment 2 of the present invention will be described. Also, in the following drawings, each element having substantially the same function as the corresponding element in the liquid crystal display device 100 will be denoted by the same reference numeral and will not be further described hereinafter. Figure 16A is a plan view viewed from the substrate normal direction, Figure 16B along Figure 16A Cross-sectional view taken along line 16B-16B'. Figure 16B A state where no voltage is applied across the liquid crystal layer is shown.

[0172] Such as Figure 16A with Figure 16B As shown in the liquid crystal display device 200 with Figure 1A with Figure 1B The liquid crystal display device 100 in the illustrated embodiment 1 is different in that the TFT substrate 200 a includes the protrusion 40 in the opening area 15 ...

Embodiment 3

[0198] According to the liquid crystal display device of embodiment 3 of the present invention and Figure 1A with Figure 1B The liquid crystal display device 100 in the illustrated embodiment 1 is different in that the counter substrate includes an alignment adjustment structure.

[0199] Figure 22A to Figure 22E A reverse substrate 300b with orientation adjusting structures 28 is schematically shown. Each element having substantially the same function as the elements of the liquid crystal display device described above will be denoted by the same reference numeral and will not be further described.

[0200] Figure 22A to Figure 22E The function of the alignment adjustment structure 28 shown is to align the liquid crystal molecules 30a of the liquid crystal layer 30 into a radial oblique alignment. It should be noted that, Figure 22A to Figure 22D The orientation adjustment structure shown in 28 and Figure 22E The alignment adjustment structure shown in is different...

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Abstract

A liquid crystal display device includes picture element regions defined each by a first electrode and a second electrode opposing the first electrode via the liquid crystal layer therebetween. The first electrode includes, in each picture element region, a plurality of unit solid portions arranged in a first direction, whereby the liquid crystal layer takes a vertical alignment in the absence of an applied voltage, and forms a liquid crystal domain taking a radially-inclined orientation in each unit solid portion by an inclined electric field produced around the unit solid portion in response to an applied voltage. The picture element regions are arranged in a matrix pattern including a rows extending in the second direction different from the first direction and columns extending in the first direction, and picture elements adjacent to each other in the second direction are driven with voltages of opposite polarities in each frame.

Description

technical field [0001] The invention relates to a liquid crystal display device, in particular to a liquid crystal display device with wide viewing angle characteristics and capable of generating high-quality display. Background technique [0002] In recent years, thin and lightweight liquid crystal display devices are used as displays for personal computers and displays for PDAs (Personal Digital Assistants). However, conventional twisted nematic (TN) type and super twisted nematic (STN) type liquid crystal display devices have a narrow viewing angle. Various technical developments have been made to solve this problem. [0003] A typical technique for improving viewing angle characteristics of a TN or STN type liquid crystal display device is to add an optical compensation plate thereto. Another method is to use the transverse electric field mode, where a horizontal electric field is applied across the liquid crystal layer relative to the plane of...

Claims

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Application Information

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IPC IPC(8): G02F1/1337G02F1/133G02F1/1333
CPCG02F1/133707G02F1/1393G02F2201/128
Inventor 久保真澄荻岛清志
Owner SHARP KK
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