TW200415410A - Transflective LCD device - Google Patents

Abstract

The invention relates to a transflective LCD device, which provides an LCD module comprising top and bottom transparent substrates. A liquid crystal layer is installed between the top and bottom substrates. The bottom transparent substrate is installed with a dielectric layer, a reflection film, a color filtering film and a cover film. The color filtering film provides multiple red, green and blue sub-pixels aligned in a form of checkerboard. The reflection layer has multiple openings and each opening is aligned by shift-interlaced method for two adjacent columns and corresponds to the location of each sub-pixel for the color filtering film so as to form a transflective LCD device.

Description

200415410 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a semi-transmissive liquid crystal display, especially a sub-pixel of a color filter film arranged in a mosaic-like form, and the reflective layer has a plurality of The opening is for a transflective liquid crystal display having the same effect as the mosaic type. [Prior art] As shown in FIG. 5, it is a schematic diagram of a pixel arrangement of a color filter film in a conventional liquid crystal display in a mosaic pattern, in which a majority of red (R) 31, green (G) 32, and blue ( B) Pixels of Son 33 are arranged in a mosaic. As shown in FIG. 6, it is a conventional mosaic electrode connection diagram, in which vertically adjacent child pixels are provided with data electrode connection lines 3 4, and the data electrode connection lines 3 4 are arranged in a vertical parallel manner, and each data The electrode connection lines 3 4 must pass through a distance of 3 5 between two adjacent sub-pixels in the horizontal arrangement to connect the vertically spaced sub-pixels; and each horizontally-arranged sub-pixel must be connected by a parallel scanning electrode connection line. 3 6 are connected together, and the data electrode connection line 3 4 and the scanning electrode connection line 3 6 are connected to a driving element (not shown in the figure) provided at the edge of the display, and the driving signal is controlled by the driving element to scan each sub-day element to Make up the screen. However, the aforementioned data transmission wiring design makes the sub-pixels arranged on the display panel must have a certain channel between the left and right adjacent sub-pixels for the data electrode connection line 34 to pass. The distance between adjacent sub-pixels cannot be reduced, which causes the resolution of the display to not be improved, so the area of the display pixels is limited and the aperture ratio is reduced. This layout of the data electrode connection lines not only makes the drive module have a higher Due to impedance

Page 4 200415410 V. Description of the invention (2) The signal becomes true and causes C r 0 s s-1: a 1 k, and it will produce a jagged shape on the display of the linear bar, resulting in poor display effect. Figure 7 shows the electrode connection line layout of Patent No. 4 9 3 7 8 2 "Pixel Driver Module for Liquid Crystal Display". Each horizontal sub-pixel is connected by a parallel scan electrode connection line. Together, and the data electrode quick wiring is arranged in a zigzag direction, wherein the zigzag electrode is characterized by being connected between the two electrodes and having a neck portion 3 7. The scanning electrode connection line sequentially longitudinally adjacent two One of the sub-pixels in the row is connected together, and the zigzag-shaped data electrode connection line layout solves the aforementioned disadvantages. It has a reduced sub-pixel pitch and increases the area and aperture ratio of the displayed pixels to improve the display. The function of the resolution. However, this structure has the following disadvantages: as shown in Figure 8 is a schematic diagram of the above-mentioned zigzag electrode, wherein the width of the neck portion 37 of the zigzag electrode at the pixel connection is reduced, which causes the electrode resistance to increase and it is extremely easy The phenomenon of C r 〇ss-ta 1 k is generated, and this silver-toothed electrode type is in the yellow light process, because the connection width is reduced in the zigzag position, which causes manufacturing difficulties and causes a decrease in yield. , Cost increases. Moreover, the arrangement of the electrodes is irregular. Therefore, it is not possible to make a color light-transmitting film by means of a single photomask translational exposure. Instead, multiple photomasks must be used for multiple exposures, resulting in increased production costs. SUMMARY OF THE INVENTION The main purpose of the present invention is to solve the above problems and provide a transflective liquid crystal display design, which can achieve the same display effect under the same existing driving conditions, and can reduce the impedance of the electrodes and reduce C r 〇 ss-ta 1 k

200415410 V. Description of the invention (3) Occurrence, increase the yield in the production process, and reduce the cost of the photomask. A second objective of this creation is to solve the above-mentioned problems and provide a liquid crystal display driving module that can increase the clarity of the liquid crystal display image, increase the area of display pixels and increase the aperture ratio, and improve the resolution of the display. To achieve the foregoing object, the present invention includes: an upper transparent substrate provided with an upper polarizer and an upper transparent electrode; a lower transparent substrate provided with a lower polarizer and a lower transparent electrode; A liquid crystal layer is sandwiched between the upper and lower transparent substrates. A dielectric layer, a reflective layer, a color filter film, and a cover film are sequentially stacked between the lower transparent substrate and the lower transparent electrode. The color filter film has most of the three sub-pixels of red, green, and blue, and each of the three sub-pixels of red, green, and blue is arranged in a mosaic manner as shown in FIG. 1. The reflective layer is provided with a plurality of openings, and The openings are arranged in two adjacent rows in a translation staggered manner, and each opening is arranged corresponding to each sub-pixel of the color filter film. The color filter film is provided with a cover film, and the cover film is opposite to the color. The next transparent electrodes are respectively provided at the positions of the sub-daylights of the crossing light film. The above and other objects and advantages of this creation can be easily understood from the detailed description and accompanying drawings of the selected embodiments below. Of course, this creation may be different in some other parts or arrangements of other parts, but the selected embodiment is explained in detail in this specification and its structure is shown in the drawings. [Embodiment]

Page G 200415410 V. Description of the invention (4) Please refer to Figures 1 to 4. The structure shown in the figure is the structure of the embodiment selected for the creation. This is for illustration only and is not subject to patent applications. Limitations of this structure. This creation is a semi-transmissive liquid crystal display, which has a liquid crystal module. The liquid crystal module includes: an upper transparent substrate 1 1, the upper transparent substrate 11 is provided with an upper polarizer 12, and the other surface is provided with an upper transparent Electrode 1 3; lower transparent substrate 2 1, the lower transparent substrate 21 is provided with a lower polarizer 2 2, the other side is provided with a transparent electrode 2 3, and an upper and lower transparent substrates 1 1 and 21 are sandwiched between The liquid crystal layer 2 4. In this embodiment, the upper transparent electrode 1 3 and the lower transparent electrode 2 3 are made by a vacuum coating method and patterned in a yellow light process to form a desired electrode. A dielectric layer 2 5, a reflective layer 2 6, a color filter film 27 and a cover film 2 8 are sequentially stacked between the lower transparent substrate 21 and the lower transparent electrode 23 in this order. In this embodiment, The material of the dielectric layer 25 includes a composition of inorganic oxides such as Si and Ti. The material of the reflective layer 26 is a metal conductive material mainly composed of silver and aluminum. The color filter film 27 has a majority of red 2 71, green 272, blue 273, three sub-day pixels, and each sub-pixel is arranged in a mosaic-like periodic arrangement, but the sub-pixels of two adjacent rows are aligned like a mosaic Arranged, the reflective layer 26 is provided with a plurality of openings 2 6 1, and the openings 2 6 1 of two adjacent rows are arranged in a translation staggered manner between two adjacent rows, and each opening 2 6 1 corresponds to a color filter film Each sub-pixel setting of 2 7 is provided with a cover film 2 8 on the color filter film 2 7, and the cover film 2 8 corresponds to the color filter film 2 7

Page 7 200415410 V. Each sub-pixel position of the description of the invention (5) is provided with a T transparent electrode 2 3. When the transflective liquid crystal display of the present invention is displayed in a transmissive mode, the backlight is incident from the lower polarizer 2 2 and passes through the openings 2 6 1 of the lower transparent substrate 21 and the reflective layer 26. Due to the arrangement of the openings 2 61 The method is arranged in a mosaic structure (as shown in Fig. 2). When the light source enters the color filter film 27, the light source is filtered, and the light source penetrates the coating film 28 and the lower transparent electrode 23 after the liquid crystal layer. 2 4 is twisted by the electric field of the lower transparent electrode 2 3 and the upper transparent electrode 13, so when the light source penetrates the liquid crystal layer 24, the color gradation changes, and finally passes through the upper transparent electrode 1 3 and the upper transparent substrate 1 After the 1 and the upper polarizer 12 are emitted, they are the images we see. In this type, the relative positions of the sub-pixels that are exactly the same as the mosaic arrangement of the display can be obtained to provide the same display effect. As shown in Figure 3, the design of this creation can make straight data electrodes, so it can achieve the same display effect as the mosaic array display under the same existing driving mode, and because it is a straight type Data electrode, so it can reduce the electrode impedance and reduce the C r 〇ss-ta 1 k phenomenon, because this reflective opening design avoids the patent No. 4 9 3 7 8 2 "pixel driver module for liquid crystal display The zigzag data electrode of the electrode connection line layout has the characteristics of the large width of the data electrode of the present invention, and therefore, it is required to improve the yield in the yellow light process and provide better character display. When the transflective liquid crystal display of the present invention is displayed in a reflective mode, please refer to FIG. 4. The reflective light source is reflected by the reflective layer 26, and the reflective layer 26 has an opening 261. Therefore, its reflective surface is of the above-mentioned transmission type.

200415410 V. Description of the invention (6) Complementary, so when the light enters the color penetrating film 2 8 and the lower and lower transparent electrodes 2 3 and the upper and lower light passes through the liquid crystal layer and passes through the upper transparent electrode 1 3 and out, it is me. The formula you see differs only by 3/4 pixels to achieve a similar effect. The embodiments described above restrict the creation, so the examples are all examples of this creation. From the above detailed information, it is clear that the aforementioned purpose can be achieved and the application is made. After the color filter film 27, the light source is filtered, and after the transparent electrode 23, the liquid crystal layer 24 is twisted by the electric field of the transparent electrode 13, so after 24, a color gradation change will occur. The transparent substrate 11 and the upper polarizer 12 are back-projected images. In reflection mode, due to the mosaic, the effect on the display is limited. The disclosure is still used to explain the creation, not to change the value or equivalent. The replacement of components should still be carried out, so that those skilled in the art can understand that the actuality of this creation has complied with the provisions of the Patent Law and file a patent.

Page 9 200415410 Schematic description [Schematic illustration]

Figure 1 is a schematic diagram of the pixel arrangement of a mosaic color filter film like this one. Figure 2 is a reflection layer structure chart of this one. Figure 3 is a reflection layer and color filter film structure of this one. The structural cross-section diagram is shown in Figure 5. Figure 5 is a conventional arrangement of mosaic pixels. Figure 6 is one of the conventional mosaic liquid crystal display electrode connection diagrams. Figure 7 is a conventional mosaic liquid crystal display electrode connection diagram. Part 2 is the conventional one. Schematic diagram of zigzag data electrode [Illustration of drawing number] (conventional part) Green pixel 3 2 Data electrode connection line 3 4 Scan electrode connection line 3 6 Red pixel 3 1 Blue pixel 3 3 Pixel distance 3 5 Neck 3 7 upper polarizer 1 2 lower transparent substrate 2 1 lower transparent electrode 2 3 dielectric layer 2 5 opening 2 6 1 red pixel 2 7 1 blue pixel 2 7 3

(This creative part upper transparent substrate 1 1 upper transparent electrode 1 3 lower polarizer 2 2 liquid crystal layer 2 4 reflective layer 2 6 color filter film 2 7 green pixels 2 7 2 film cover 2 8

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Claims (1)

200415410 VI. Scope of patent application 1 · A translucent liquid crystal display with a liquid crystal module, the module includes: an upper transparent substrate, the upper transparent substrate is provided with an upper polarizer, and the other side is provided with an upper transparent electrode A lower transparent substrate, a lower polarizing plate provided on the lower transparent substrate, a transparent electrode on the other side, and a liquid crystal layer between the upper and lower transparent substrates; the lower transparent substrate and the lower transparent electrode are sequentially stacked A dielectric layer, a reflective layer, a color filter film and a cover film are provided; the color filter film has most of the red, green, and blue color sub-pixels arranged in a mosaic-like manner, and the reflective layer is provided with There are a plurality of openings, and each opening is arranged in a translational staggered manner of two adjacent rows, and corresponds to the position of each sub-pixel of the color filter film. The color filter film is provided with a cover film, and the cover film is opposite to There is a transparent electrode at each pixel position of the color filter. 2. The semi-transmissive liquid crystal display according to item 1 of the scope of patent application, wherein the upper and lower transparent electrodes are made by vacuum coating. 3. The semi-transmissive liquid crystal display according to item 1 of the scope of the patent application, wherein the material of the reflective layer is a metal conductive material mainly composed of silver and shaw. 4 · The transflective liquid crystal display according to item 1 of the scope of the patent application, wherein the reflective layer and the transparent substrate have more than one dielectric layer between them. 5 · The transflective layer according to the scope of the patent application, item 1 LCD, which Page 11 200415410 VI. In the scope of patent application, the upper and lower transparent electrodes are patterned by the yellow light process into the required electrodes. 6. The transflective liquid crystal display according to item 1 of the scope of the patent application, wherein the openings of the reflective layer are made by etching with a yellow light process, and the positions of the openings are arranged in a manner that two adjacent rows are translated in translation. 7. The semi-transmissive liquid crystal display according to item 1 of the scope of patent application, wherein the color filter pixels include red, green, and blue periodic filters. 8. The semi-transmissive liquid crystal display according to item 1 of the patent application scope, which The pixel arrangement of the color filter is a mosaic-like arrangement. 9 * The semi-transmissive liquid crystal display according to item 4 of the scope of the patent application, wherein the material of the dielectric layer includes a composition of inorganic oxides such as Si and Ti. Page 12