TWM241688U - Liquid crystal display capable of switching display mode and its color filter module - Google Patents

Description

M241688 Horse, creation instructions (1) [The corresponding design mode and high color in the device of the new-generation creative color light sheet] [Previous technology, a mode and a penetrating structure such as the first lower glass plate 12 from top to top When the back of the liquid crystal layer 16 and the emission layer 18 are turned on to display the color of the back mode, however, the main reason for the too dark mode is the emissivity requirement, and the color purity display is still a problem. Field] It is related to 7 kinds of liquid crystal display H, especially about-a kind of liquid crystal display with a reflective layer that can be independently controlled in color pixels and a reflective layer on the display to provide high-brightness gray-scale reflectance and color tooth-tooth mode switching. The role. ] Normally semi-reflective color LCD monitors also have a color display with reflection mode. A conventional semi-reflective liquid crystal display is shown in the figure: 'a liquid crystal display 丨 〇 includes two parallel arrangements above, 12', an upper glass plate 12 and a lower glass plate 12, and a color filter is placed under the opposite surface. (Color filter) 14, semi-reflective layer 18, and a driving element layer 20, and a backlight module 22 is provided at the semi-reflective position. When the backlight module 22 transmits light and is emitted from the upper glass plate 12 , That is, penetrating display, and when the backlight module 22 is turned off, using incident light reflection is a color display in reflection mode. The conventional semi-reflective color liquid crystal display generally has the problem of insufficient color purity in reflection mode and at the same time in transmission mode. Because the color purity of the color filter 14 is limited by the reflection mode, high-purity color patches cannot be used; on the other hand, even if the reflectivity is not sacrificed, reflection-type color with high brightness is not satisfactory. The decisive method is to do between the reflection and transmittance of the semi-reflective layer 18 and also to match the color purity of the color filter 14 as much as possible.

M241688 3. Creation instructions (2) Achieving a balance point; moreover, there is also adjustment of the thickness of the color reflection area and the penetration area to reflect the reflection: some methods are ideal for high reflectivity and high chroma, and cannot be effectively improved Semi-reflective energy. 7 Therefore, this creation is aimed at the above-mentioned LCD monitors that are bothering with white and color modes, so that the same emissivity gray scale display and high-chroma penetration color display [new content] ^ The main purpose of this creation is to provide a crystal display and The color filter module is transparently configured and transparently transmitted through an independent control mechanism to achieve the dual function of high-brightness color transmission mode. Another purpose of this creation is to provide a crystal display, which also has some advantages in the transmission mode. In order to achieve the above purpose, the display device of this creation includes two upper and lower transparent substrates. A liquid crystal layer is sandwiched between the two transparent substrates and placed between the two transparent substrates. Pixel 'and each pixel contains several colors, and a reflection matrix layer is arranged under the liquid crystal layer, and the position of each reflection unit corresponds to the effectiveness of the color block location and penetration of the filter 14; The requirements of both parties are still not as good as those of the liquid crystal display, and a switchable black display with high reflection is also proposed. A switchable display mode. The liquid bright color block with the reflective layer of the display can be switched to a fully anti-gray reflection mode and a high-color switchable display mode. The liquid crystal display and liquid crystal display are in parallel. Relationship; a color filter is set with a plurality of neat rows and a reflection block; it is composed of each reflection block of a plurality of reflection units to reflect

Page 6 M241688 IV. Creative Instructions (3) — radiate external light; another backlight module is set at the backlight position. Among them, a color filter module composed of a color filter and a reflection matrix layer can make the display switch to full reflection or full penetration, which has the function of high-brightness grayscale mode or high-chroma transmission mode. ° Detailed descriptions are provided below with specific examples and accompanying drawings to make it easier to understand the purpose, technical content, features, and effects of this creation. [Embodiment] This creation is to separate the reflection area, and by adding a reflection block to each pixel in addition to the color block that is penetrated, the reflection block has no color display, that is, black and white ( (Grayscale) display, and it is controlled by an independent ITO matrix like color blocks, so that after the display is switched between reflection mode and transmission mode, it has a high-gray grayscale reflection display or high-chroma transmission Color display. The switchable display mode liquid crystal display of this creation is shown in the second figure, which is a sectional view of its structure. A liquid crystal display 30 includes two upper and lower transparent substrates 3 2, 3 2 '' which are arranged in a parallel spaced relationship. The two transparent substrates 32 'are usually made of glass; a liquid crystal layer 34' is sandwiched between the two transparent substrates 32, 32, and a color filter 36 is disposed between the two transparent substrates 32, 32 'and located in the liquid crystal layer. Above 34, the color filter 36 is provided with a plurality of neatly arranged pixels 36, each of which includes four blocks, which are three color blocks 362 and a reflection block 364, each pixel 360 The colors of the three color blocks 3 6 2 are red (R), blue (b), and green (G). The reflection block 364 is a colorless transparent block (L); a reflection moment

M241688 4. Creation instructions (4) The array layer 38 is disposed between the liquid crystal layer 34 and the lower transparent substrate 32. The reflection matrix layer 38 is composed of a plurality of reflection units 382, and the position of each reflection unit 382 corresponds to each The reflection block 364 and the reflection unit 382 are made of a material with high reflectivity. Through such a structural arrangement relationship of a reflection unit 382 disposed under each of the transparent reflection blocks 3 64, it is possible to make incident outer light rays After passing through the reflective blocks 3 6 4 and the liquid crystal layer 34, they are effectively reflected. A TFT driving element layer 40 is provided between the two upper and lower transparent substrates 32 and 32 and below the liquid crystal layer 34. The TFT driving element layer 40 is arranged in a flat layer 402, and each active driving unit 404 corresponds to Each block 362/364 of the color filter 36 on the top, so that each of the pixels of the color filter 36 has 360 RGB three-color blocks 362 and reflective blocks 3 64 each by an independent active The driving unit 404 controls. In addition, two upper and lower polarizing plates 42 and 42 are respectively provided on the outer surfaces of the upper and lower transparent substrates 32 and 32, and two upper and lower polarizing plates 42 and 42 are respectively provided on opposite surfaces of the two polarizing plates 42, 42. , The lower phase difference compensation sheet 44 and 44, and a scattering layer 46 is covered on the lower surface of the upper phase difference compensation sheet 44; a backlight module 48 is disposed below the lower transparent substrate 3 2 'and is located in the backlight of the color filter 36 Position 'provides backlight for color display in transmissive mode. Wherein the structure of the above-mentioned liquid crystal layer 34, as shown in FIG. 2A, generally includes two parallel conductive upper and lower transparent conductive layers 342, 342, and the conductive material of the transparent conductive layers 3 42, 342 'is usually indium tin oxide ( Indium Tin

Oxide’ITO) ’and the upper and lower transparent conductive layers 342 and 342 are provided with an alignment layer 344, 344, and an alignment layer 344, 344, respectively.

M241688

Polyimide (PI) coating, and another liquid crystal molecule f 346 is sandwiched between the upper and lower transparent conductive layers 342 and 342, so that the transparent conductive layers 342 and 342 'act as transparent electrodes to drive the liquid crystal molecules. The production-alignment direction changes. The details of the transparent conductive layer and the alignment layer will not be repeated here. Since the technology through the control circuit, the above-mentioned liquid crystal display system has four modes, which are: full reflection, full penetration, half] = color and all black, expected: dry X-ray type office

(1) Reflection mode: the reflection block 364 is on, and the three-color block 362 is off. Here, on and off refers to display and non-display. When not displayed, the driving circuit control layer 3 to 4 keeps the block 362-staying completely black. When displaying, the driving circuit controls the individual according to the daytime surface of the desire. The penetration rate of block 364 is the same as the opening and closing below. &Amp; In this reflection mode, since the reflection block 364 is a transparent block, the reflected light is not lost on the color block at all: a high-brightness grayscale display effect can be achieved. The display effect at this time is comparable to the reflective grayscale display effect of the conventional art.

(2) Transmission mode: reflection block 364 M (〇ff), three-color block 362 (On), at this time, the light of the backlight is fully transmitted through the color block of the color filter 36 and the upper transparent substrate 32 shots. Since the color purity of the three-color block 36 2 does not need to be limited by the reflectivity requirements of the reflection mode, a high-purity color block can be used. Therefore, the penetrating mode of this creation has the advantage of high chroma; $, the brightness can be obtained by The intensity design of the light source of the backlight module 48 can easily achieve a high brightness effect. The display effect at this time is a penetrating color display comparable to the known technique

Page 9 M241688 IV. Creation instructions (6) (3) Semi-reflective color mode: reflection block 3 64 on (0 10, three-color block 362 on). The display effect at this time is similar to that of the conventional art. The semi-transmissive color display effect 'color purity is between the above-mentioned reflection mode and transmission mode. (4) Blackboard-style · reflection block 364 off (off), three-color block 362 off (0ff), at this time It is similar to the shutdown state, and this mode is rarely used. When the above-mentioned liquid crystal display 30 is applied to the screen of a portable device such as a mobile phone, it can be controlled between the black and white grayscale reflection mode and the high-chroma transmission mode by controlling 1C In addition, it also supports the semi-reflective color mode when the two modes are turned on at the same time. Therefore, this creation separates the reflective area, and by adding a reflective block outside the RGB three-passing color block, each The pixel contains four blocks, and the reflective block is controlled by the same driving element as the RGB color block, so that the display has a high degree of partyness in the reflection mode and a high degree of chroma in the transmission mode. And the need for high brightness. Not only can it effectively overcome the lack of knowledge, but it also provides a switchable mode liquid crystal display with high market value under the control of cost. The above-mentioned example is a TFT liquid crystal display, and the position of the color filter 36 is It is located above the liquid crystal layer 34, so that external light passes through the transparent area and is completely reflected by the reflective layer. Generally, a TFT liquid crystal display can also place a color filter 36 under the liquid crystal layer 34, but it is less common. However, Regardless of the position of the color filters 36 in the display, in order for the reflected light to be controlled by the liquid crystal layer 34, the reflection matrix layer 38 must be disposed below the liquid crystal layer%. In addition, if the reflection matrix layer 38 already has a scattering effect, Then, in the system of the upper polarizing plate 42 and the compensation sheet 44, there is no need to build a scattering layer 46. In addition to using a TFT structure, the liquid crystal layer 34 of this creation can also be used

M241688 IV. Creation Instructions (7) Super twisted nematic (STN) liquid crystal structure, as shown in Figure 3, is another embodiment of this creation. The liquid crystal structures used by STN and TFT displays are well-known techniques. The biggest difference between the two liquid crystal structures is that there is no active driving element under the color block of STN. There is only a transparent conductive layer, generally ITO. The remaining structure is the same as the second one. The structure of the embodiment of the figure is not repeated here. In addition, in addition to the STN liquid crystal structure, the liquid crystal layer 34 may also use a bistable or multistable memory liquid crystal structure, such as a BiNem liquid crystal structure (see US Patent Publication No. 20 030 1 46894), a cholesteric liquid crystal, or Ferromagnetic liquid crystal structure. Among them, there are also two approaches to the STN display architecture in this creation, that is, the color filter 36 is arranged above the liquid crystal layer 34 as shown in the third figure, or the color filter 36 is shown as shown in the fourth figure. It is disposed below the liquid crystal layer 34. In the embodiment of the fourth figure, the color filter 36 is disposed below the liquid crystal layer 34 and is located between the liquid crystal layer 34 and the lower transparent substrate 32, and the reflection matrix layer 38 is. Also placed in color; on the upper surface of the light-reflecting sheet 36, below the reflection unit M ?, although the block basically uses a transparent block (τ) 364, but because the reflection unit 382 is a high reflectance, it is basically not Light transmission is required, so in this configuration, it is not necessary to use transparent blocks 364, and it is sufficient to fill the blocks 364 with black frame (dagger 1 & "matrix, BM") material, such as fifth =: save-channel The manufacturing process and its cost are both cost and efficiency = ^ In the fourth figure, the 'reflection matrix layer 38' can also be arranged on the surface below the color 2 36, that is, the transparent block ；; the structure can also achieve the same effect. This configuration ends

M241688 Creation Instructions (8) Please refer to the sixth figure again. This is a top view of the STN structure for this creation. Whether the color filter 36 is placed above or below the liquid crystal layer 34, the same results are seen in the top view. The creation adds a reflective block 364 in addition to the red, green, and blue penetrating color blocks 362; on the drive circuit, the reflective block 364 is considered as an independent color block, and the driver IC can control only the reflection or only the startup Teething mode. In the above embodiments, the arrangement of the four blocks in each pixel 360 is based on the basic stripe type. However, the creation of the block is not limited to the stripe type. The four The arrangement of the blocks can also be arranged in a mosaic or quadrangular manner. 27A through 10A are the various positions of the RGB tri-color block and the radiant block in each pixel of the color filter of this creation. For the layout of the ITQ layout of the block configuration, the size ratio is not completely consistent with the block configuration diagram in order to show the interval of the routing. The seventh picture A is a straight configuration. Although the second picture increases the number of duties in the horizontal row, it makes the red, green, and blue three-color blocks 362 not too narrow and long. It is relatively easy to make in the manufacturing process and is applicable. Unlimited recognition for work (duty). The ninth picture A is a basic triangular arrangement (& 1 h 〇r 11 & =, which belongs to a mosaic arrangement, here the mosaic arrangement block 364 5: St color block 3 62 series is arranged to form a triangular arrangement, and the reflection 3-shaped row :, between the color blocks 362. In addition, the tenth picture A is' any adjacent four blocks are different colors. In the above pixels: two configuration structure towels, no matter what kind of arrangement, each-block The blocks are independently controlled. The above-mentioned examples explain the characteristics of this creation through examples. The purpose is M241688. 4. Creation instructions (9) enable those skilled in the technology to understand the content of this creation and implement it instead of limiting. The scope of patent of this creation, therefore, any other equivalent modification or modification that does not depart from the spirit revealed by this creation shall still be included in the scope of patent application described below. Description of drawing number: 1 0 Liquid crystal display 1 2 'Lower glass plate 16 liquid crystal layer 2 0 driver element layer 3 0 liquid crystal display | § 3 2' lower transparent substrate 342 upper transparent conductive layer 3 44 alignment layer 346 liquid crystal molecular layer 3 6 color filter 3 6 2 color patch 3 8 reflective matrix layer 40 TFT driver 404 Active drive unit 4 2 Upper polarizer 44 Phase difference compensation sheet 4 6 Scattering layer 1 2 Upper glass plate 1 4 Color filter 1 8 Semi-reflective layer 22 Backlight module 3 2 Upper transparent substrate 3 4 Liquid crystal layer 342 ' Transparent conductive layer 3 4 4 'Alignment layer 3 60 pixels 364 Reflective block 3 8 2 Reflective unit 4 0 2 Flat layer 4 2' Lower polarizer 44 'Lower phase difference compensation sheet 48 backlight module

Page 13 M241688 Brief description of the diagram The first diagram is a sectional view of the structure of a conventional semi-reflective liquid crystal display. The second figure is a sectional view of the structure of the creative liquid crystal display. FIG. 2A is a cross-sectional view of the structure of the liquid crystal layer in the second image. The third figure is another embodiment of the creative liquid crystal display. The fourth figure is another embodiment of the creative liquid crystal display. The fifth figure is a schematic view showing that the reflective block is a black frame in the fourth figure. The sixth figure is the top view of the STN structure of this creation. Figures 7A and 7B are schematic diagrams of the layout of the four blocks of each pixel and their I TO layout.

Figures 8A and 8B are schematic diagrams of another embodiment in which the four blocks of each pixel are arranged in a straight stripe and its I TO layout. Figures 9A and 9B are schematic diagrams of the four layouts of each pixel of the creation in a Marseille configuration and its IT0 layout. Figures 10A and 10B are schematic diagrams of the layout of the four blocks of each pixel and its I TO layout.

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Claims (1)

M241688 • A switchable display mode liquid crystal display, including: · two upper and lower transparent substrates, which are arranged in a parallel spaced relationship, · two, a crystal layer, disposed between the two upper and lower transparent substrates, · ,, / shape filters The sheet is arranged between the two transparent substrates, and the color filter 2 is provided with a plurality of pixels arranged in order, and each of the pixels includes a plurality of color blocks and a reflection block. Individually controlled by independently controlled drive electrodes; A reflection matrix layer is disposed below the liquid crystal layer. The reflection matrix layer is composed of a plurality of reflection units, and the position of each reflection unit corresponds to each reflection block to reflect through the outer boundary of the liquid crystal layer. Light; two upper and lower polarizing plates, which are respectively located on the outer surfaces of the upper and lower transparent substrates; and a backlight module, which is arranged at the backlight position of the color filter. 2. The switchable display mode liquid crystal display according to item 1 of the scope of patent application, wherein the color filter is disposed above the liquid crystal layer, and the reflection matrix layer is positioned between the liquid crystal layer and the bottom transparent Between substrates. 3. The switchable display mode liquid crystal display as described in item 2 of the scope of patent application, wherein the reflective block is a transparent block. 4. The switchable display mode liquid crystal display according to item 1 of the scope of patent application, wherein the color filter is disposed below the liquid crystal layer, and the reflection matrix layer is positioned above the color filter On the surface. 5. The switchable display mode liquid crystal display as described in item 4 of the scope of patent application, wherein the reflective block is selected from the group consisting of a transparent block and an opaque block—which is 0 Page 15 M241688 6 · The switchable display mode described in item 5 of the scope of the patent application. The switchable display mode described in item 1 of the patent scope. The liquid crystal display = correction, the reflection units of the reflection matrix layer are composed of Made of high reflectivity wood. τ% ^ The switchable display mode liquid crystal display 7 described in item 1 of the scope of patent application, wherein the colors of the color blocks in each pixel are red, blue, and green, respectively. ^ The switchable display mode liquid crystal display as described in item 1 of the scope of the patent application: wherein the arrangement relationship of the blocks in each of the pixels is selected from one of an arrangement of straight, mosaic and rectangular. Qiao · The switchable display mode liquid crystal display as described in item 1 of the scope of patent application, wherein two upper and lower phase difference compensating sheets are respectively provided on the opposite surfaces of the two upper and lower polarizing plates. π. The switchable display mode liquid crystal display device described in item i 0 of the patent application range, wherein a scattering layer is further provided on the surface of the upper phase difference compensation sheet. lj. The switchable display mode liquid crystal display described in item 1 of the scope of patent application, wherein a TFT element driving layer is further provided between the two upper and lower transparent substrates and located below the liquid crystal layer, which includes a plurality of The active driving unit corresponds to the blocks of the color filter, and each of the active driving units is used to independently control each of the blocks. \ 3. The switchable display mode liquid crystal display device described in item 1 of the scope of the patent application, wherein the liquid crystal layer adopts a super twisted wire (STN) structure. 14. Switchable display mode liquid crystal display as described in item 1 of the scope of patent application Page 16 M241688 Device, wherein the liquid crystal layer adopts a Bi Nem liquid crystal structure. 15. The switchable display mode liquid crystal device described in item 1 of the scope of the patent application, wherein the liquid crystal layer sequentially includes an upper transparent conductive sound, a molecular layer, and a lower transparent conductive layer. Said "Yingjing 16" The switchable display mode liquid crystal device described in item 1 of the scope of patent application, wherein the two transparent substrates are made of glass. Yang ~ No 17 · —A color filter module, which is used in a liquid crystal display that can switch between black and white and color modes. The liquid crystal display is composed of a pair of transparent substrates with a liquid crystal layer sandwiched between them. The color filter module is a color filter provided between the two transparent substrates. The color filter is provided with a plurality of pixels arranged in order, and each pixel includes a number of color blocks. And a reflective block, which are individually controlled by independent two driving electrodes; and a 21 reflective matrix layer, which is provided below the liquid crystal layer, and the reflective moment layer is composed of a plurality of reflective units, And the position of each of the reflection units corresponds to each of the reflection blocks to reflect light passing through the outer boundary of the liquid crystal layer. 18. The color filter module according to item 17 of the scope of patent application, wherein the color filter is disposed above the liquid crystal layer, and the reflection matrix acoustic system is located between the liquid crystal layer and the lower transparent substrate. between. θ 19. According to the color 0 color filter module 'described in item 18 of the scope of the patent application, wherein the reflection block is a transparent block. 20. The color filter module according to item 17 of the scope of patent application, wherein the color filter is disposed below the liquid crystal layer and the reflection matrix layer M241688 V. Application scope The patent is located on the upper surface of the color filter. 2 1 · The color filter module as described in item 20 of the patent application scope. The reflection block is selected from transparent and opaque blocks. 22 · The color as described in item 21 of the patent application scope. The opaque block of the filter module is formed by filling the black frame material. 23. The color filter module according to item 17 of the scope of application for patents, wherein-which < wherein ^ is • ... ·-, ~~ cut groups, in which, the reflection unit layers of the reflection matrix layer are Made of highly reflective materials. Among them,, blue, of which, mosaic 24. According to the color calendering module described in item 17 of the scope of patent application, the color of the color blocks in each pixel is red and green respectively. 25. The color filter module described in item 17 of the scope of the patent application, wherein the arrangement relationship of the blocks in each pixel is selected from one of a straight line arrangement and a rectangular arrangement. Page 18