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Semi-reflecting and semi-transmitting thin-film transistor liquid crystal display

A technology of thin film transistors and liquid crystal displays, which is applied in instruments, nonlinear optics, optics, etc., can solve problems such as affecting the contrast of the transmission area, and achieve the effect of high contrast.

Inactive Publication Date: 2012-07-11
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using linear crossed polarizers, the reflective area is in normally white mode, which will affect the contrast displayed in the transmissive area

Method used

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  • Semi-reflecting and semi-transmitting thin-film transistor liquid crystal display
  • Semi-reflecting and semi-transmitting thin-film transistor liquid crystal display
  • Semi-reflecting and semi-transmitting thin-film transistor liquid crystal display

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Specifically, refer to Figure 2A as well as Figure 2B What is shown is a schematic cross-sectional view of the reflective area and the transmissive area of ​​the liquid crystal cell in a transflective thin film transistor liquid crystal display according to the present invention when the reflective mode is used. Among them, such as Figure 2A What is shown is a schematic cross-sectional view of the reflective region in reflective mode. Specifically, it includes a common electrode 2141 on the color filter side, a reflective pixel electrode 2221 and a liquid crystal layer 231 . When the ambient light is strong, the thin film transistor liquid crystal display can only reflect the ambient light through the reflective area in the pixel electrode for display. Those skilled in the art understand that the driving circuit (not shown in the figure) in the thin film transistor liquid crystal display can adjust the electric field distribution between the common electrode 2141 ...

Embodiment 2

[0041] Figure 3A as well as Figure 3B It is a schematic cross-sectional view of the reflective area and the transmissive area of ​​the liquid crystal cell in a transflective thin film transistor liquid crystal display of the present invention when the transmissive mode is used. Among them, such as Figure 3A Shown in is a schematic cross-sectional view of the reflective region in the transmission mode. Specifically, it includes a common electrode 2141 on the color filter side, a reflective pixel electrode 2221 and a liquid crystal layer 231 . Those skilled in the art understand that, in the transmission mode, the reflective region is displayed as a black state, which can be passed through the TFT in the reflective region (such as Figure 4 The TFT switch 305 in the reflective area shown in ) is controlled to realize that the potential difference between the two sides of the liquid crystal cell in the reflective area is 0, so that the liquid crystal molecules in the reflec...

Embodiment 3

[0044] Embodiment 3: When the ambient light is insufficient, the transflective thin film transistor liquid crystal display can display images in a transmissive mode. At this time, the control gate metal 302 in the transmissive region is opened, and the transmissive pixel electrode 310 is given an appropriate To display the set gray scale, at the same time, the reflective area control gate metal 301 is turned on, and the reflective pixel electrode 309 is given an appropriate potential to display a black state.

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Abstract

The invention discloses a semi-reflecting and semi-transmitting thin-film transistor liquid crystal display, which comprises a color film substrate, a first polarized plate, an array substrate, a second polarized plate and a liquid crystal layer, wherein the first polarized plate is positioned on the color film substrate, the second polarized plate is positioned on the array substrate, and the liquid crystal layer is arranged between the color film substrate and the array substrate. The array substrate comprise a plurality of pixel electrodes, each pixel electrode comprises a reflecting area and a transmitting area which are respectively connected with a thin-film transistor, the thickness of the liquid layer corresponding to the reflecting area is half of that of the liquid layer corresponding to the transmitting layer, and the first polarized plate and the second polarized plate are linearly orthogonal. The semi-reflecting and semi-transmitting thin-film transistor liquid crystal display is capable of displaying images through different display modes according to the density of ambient light, and the reflecting area and the transmitting area of each pixel electrode are controlled by double TFT (thin-film transistor l) switches respectively, so that a reflecting effect and a transmitting effect are mutually unaffected, and further a reflecting mode is brighter and the contrast ratio of a transmitting mode is higher.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a transflective and transflective thin film transistor liquid crystal display. Background technique [0002] The multimedia technology in modern society is quite developed, most of which benefit from the progress of semiconductor components and display devices. As far as display is concerned, thin film transistor liquid crystal displays (TFT-LCDs) with some advantages such as high quality, high space utilization, and low power consumption have gradually become mainstream. [0003] refer to figure 1 As shown, an existing thin film transistor liquid crystal display includes: figure 1 As shown, it includes: an upper substrate 11 and an array substrate 12 arranged oppositely, a liquid crystal layer 13 clamped between the inner side of the upper substrate 11 and the array substrate 12, and a polarizer 15, 17. [0004] The array substrate 12 further includes a thin f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/136G02F1/1343
Inventor 马骏罗熙曦
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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