Semi-transmission and reflection liquid-crystal displaying device
A technology for liquid crystal display devices and reflective areas, which is applied in static indicators, semiconductor/solid-state device manufacturing, optics, etc., and can solve the problems of different gray scales, light transmittance and reflectance, and color gray scale differences, etc.
Inactive Publication Date: 2004-12-08
TPO DISPLAY
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Problems solved by technology
However, the curves of transmittance vs. applied voltage and reflectance vs. applied voltage do not overlap (see Figure 2A ), so under the same applied voltage, the transmittance and reflectance of light are not the same, which will cause the gray scales corresponding to the reflective area and the transmissive area to be different under the same applied voltage. Colors will vary depending on the gray scale corresponding to the reflective versus transmissive areas
The above situation will lead to a difference in the gray scale of the color displayed when the liquid crystal display uses its own light source to display through the transmissive area (transmissive mode) and when it uses an external light source to display through the reflective area (reflective mode).
For example, when the display is displayed in a transmissive mode, it appears blue, but when the display is displayed in a reflective mode, it may appear light blue, thus causing confusion to users and causing users to question the product
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[0047] Some embodiments of the present invention will be described in detail below. However, the invention may be practiced broadly in other embodiments than those described in detail, and the scope of the invention is not limited, except as defined in the appended claims.
[0048] For a first embodiment of the present invention see image 3 A cross-sectional view of a transflective liquid crystal display. In a transflective liquid crystal display, each pixel can be divided into two parts, the transmissive area Π and the reflective area I. Firstly, a thin film transistor 31 is formed inside a transparent substrate 301, and then a transparent insulating layer 321 is formed. The transparent insulating layer 321 can be a silicon oxide (SiOx) layer, a silicon nitride (SiNx) layer or a stack of the above two materials. layer. Then, start to define the transmissive region ∏ and reflective region I. A raised insulating layer 322 with a bump shape is formed at the position of the ...
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A device consists of the first backing with multiple transmission region and multiple reflection region, a transmission electrode located above the transmission region, a reflecting electrode located above reflection region and connected in electricity with the transmission electrode, the second backing with the first multiple shared electrode and the second multiple shared electrode as the first shared electrode is located at corresponding position above the transmission region and the second at corresponding position above the reflection region with the two electrodes being electroless-connected together, a liquid crystal layer is placed in between the first backing and the second backing.
Description
technical field [0001] The present invention relates to a liquid crystal display device, in particular to a semi-transmissive and semi-reflective liquid crystal display device. By applying different common voltages to the transmissive area and the reflective area respectively, the transmissive area and the reflective area of the liquid crystal display can be made The displayed color gray scale is the same. Background technique [0002] The color liquid crystal display panel includes two transparent substrates and a liquid crystal layer placed between the transparent substrates. Generally speaking, the TN (Twisted nematic) liquid crystal commonly used in the existing TFT liquid crystal display is the linear liquid crystal (Nematic). The liquid crystal molecules have a one-dimensional regular arrangement in space, and the long axes of all the rod-shaped liquid crystal molecules will choose a specific direction as the main axis and arrange in parallel with each other. The l...
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IPC IPC(8): G02F1/133G02F1/1343H01L21/3205
Inventor 温志坚丁岱良何玄政
Owner TPO DISPLAY