WO2005052675A1 - Afficheur couleur a cristaux liquides - Google Patents

Afficheur couleur a cristaux liquides Download PDF

Info

Publication number
WO2005052675A1
WO2005052675A1 PCT/CN2004/000215 CN2004000215W WO2005052675A1 WO 2005052675 A1 WO2005052675 A1 WO 2005052675A1 CN 2004000215 W CN2004000215 W CN 2004000215W WO 2005052675 A1 WO2005052675 A1 WO 2005052675A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
beautiful color
display according
picture
Prior art date
Application number
PCT/CN2004/000215
Other languages
English (en)
Chinese (zh)
Inventor
Wei Lu
Junling Liao
Guangsheng Huang
Jun Yang
Original Assignee
Hui Zhou Tcl Mobile Communication Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNU2003201221808U external-priority patent/CN2621371Y/zh
Priority claimed from CN 200320122176 external-priority patent/CN2901365Y/zh
Priority claimed from CNU2003201221827U external-priority patent/CN2621372Y/zh
Application filed by Hui Zhou Tcl Mobile Communication Co., Ltd. filed Critical Hui Zhou Tcl Mobile Communication Co., Ltd.
Publication of WO2005052675A1 publication Critical patent/WO2005052675A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters

Definitions

  • the invention relates to a liquid crystal display, in particular to a beautiful color liquid crystal display provided on an electronic device.
  • "beautiful color” means a beautiful color pattern or picture. Background technique
  • black-and-white liquid crystal displays cannot meet the needs of people to enjoy the convenience and beauty brought by color liquid crystal displays because of their weaknesses in not being able to perform color display.
  • TFT liquid crystal display that is, a TFT liquid crystal display (generally referred to as true color)
  • TFT liquid crystal display has the following disadvantages: 1. Unlike a black and white liquid crystal display, a TFT liquid crystal display is Each pixel is controlled by a separate transistor. Therefore, such a display requires a large number of transistors, which results in high cost and large power consumption, which in turn leads to high cost, high price, and high energy consumption of electronic equipment using the liquid crystal display. 2. At present, few manufacturers can provide color LCD monitors, which has led to a shortage of color LCD monitors in the market, and the price has repeatedly risen.
  • the present invention provides a beautiful color liquid crystal display, which is different from a TFT liquid crystal display (generally referred to as true color), and replaces the existing black and white liquid crystal display with a combination of beautiful color pictures and a black and white liquid crystal display. And true color LCD display, and then cooperate with backlight and light guide plate to achieve color display effect.
  • the beautiful color liquid crystal display provided by the invention not only can display color images well, has low cost, simple structure, convenient processing, but also has small size, light weight, and low energy consumption, and can be widely used in electronic devices that require color display effects. on.
  • the mobile phone can be made into a single color screen structure or various forms of double color screen structures. Therefore, this color screen mobile phone has a broad market prospect.
  • a beautiful color liquid crystal display includes at least one liquid crystal display portion, wherein the liquid crystal display portion includes a liquid crystal display screen stacked together, A light guide plate and a beautiful picture between the liquid crystal display and the light guide plate.
  • At least one of the two surfaces of the colorful picture is a B-subsurface; and at least one of the two surfaces of the colorful picture is provided with a double-sided adhesive for communicating with the liquid crystal display.
  • the screen and / or the light guide plate are bonded; the double-sided adhesive is disposed on a non-display area of the beautiful picture and forms a circular pattern.
  • the beautiful picture is a picture made of polyethylene terephthalate plastic.
  • the beautiful color picture may also include at least two layers including a picture layer and a polyethylene terephthalate substrate layer.
  • the colorful picture may also be a film layer and a picture layer which are sequentially stacked. And a three-layer structure composed of the polyethylene terephthalate substrate layer.
  • the colorful picture may have a three-layer structure composed of the picture layer, the polyethylene terephthalate base material layer, and the semi-permeable film layer which are sequentially stacked.
  • the beautiful color picture may also have a four-layer structure composed of a film layer, the picture layer, the polyethylene terephthalate base material layer, and a semi-permeable film layer which are sequentially stacked.
  • the semi-permeable film is a bright film or a dumb film
  • the liquid crystal display is a fully transparent liquid crystal display.
  • a diffusion sheet is further provided between the beautiful picture and the light guide plate; a light reflector is also provided between the light guide plate and the liquid crystal display circuit board.
  • the pretty color liquid crystal display of the present invention further includes a liquid crystal display circuit board electrically connected to the liquid crystal display part, and the liquid crystal display circuit board has at least one light emitting diode; the diode is a white light source.
  • the light guide plate has a notch corresponding to the light emitting diode, and the light emitting diode is located in the notch when the beautiful liquid crystal display is in an assembled state.
  • a plurality of positioning cards are provided on the periphery of the light guide plate for positioning the liquid crystal display screen and colorful pictures.
  • the light guide plate of the present invention may also be provided in such a manner that at least one outwardly extending inclined portion is formed on the side of the light guide plate, and the inclined portion is composed of a trapezoidal portion and a rectangular portion connected to the bottom of the trapezoidal portion
  • the rectangular portion is provided with a semi-circular groove; the light guide plate is installed in a frame, and one side of the frame has a trapezoidal structure capable of accommodating the inclined portion and a rectangular structure connected to the upper bottom of the trapezoidal structure.
  • the light emitting diode is disposed in a cavity formed between the groove and the inner wall of the rectangular structure, and is electrically connected to the liquid crystal display circuit board through a flexible circuit.
  • the angle between the hypotenuse of the inclined portion and the horizontal direction is between 15 degrees and 30 degrees.
  • a plurality of positioning stops are formed around the frame for positioning the colorful pictures and the LCD screen. ⁇
  • the light guide plate of the present invention may also be arranged in such a manner that at least one outwardly extending inclined portion is formed on the side of the light guide plate, the inclined portion is triangular, and a semicircular groove is formed at the top corner thereof, and A diode is disposed in the groove.
  • the angle between the hypotenuse of the inclined portion and the horizontal direction is between 15 degrees and 30 degrees.
  • a plurality of positioning clips are formed on the light guide plate.
  • a protective screen is provided on the outside of the liquid crystal display screen, and the protective screen is a liquid crystal protective screen for holographic images.
  • the present invention has the following positive technical effects: Since the liquid crystal display screen is a fully transparent liquid crystal display screen, and a colorful pattern is printed with a color pattern, the fully transparent liquid crystal display screen and the colorful image are superimposed on each other. Together, the display content on the LCD screen can be fused with the color pattern on the beautiful picture, so that users can feel the beautiful color display effect.
  • the light-emitting diode provides a white light source for the color screen structure.
  • the light guide plate diffuses the light emitted by the light-emitting diode therein, thereby providing a uniformly-distributed backlight for the bright color pictures.
  • the intensity of the backlight is enhanced, and the adoption of all the above measures further enhances the color display effect.
  • the present invention Since the present invention has a simple structure and convenient processing, it is very suitable for mass production, so that it can provide sufficient sources of supply for electronic equipment manufacturers of color displays.
  • the raw materials used in the present invention have low cost and strong practicability, so that consumers can buy electronic devices such as mobile phones, televisions, and computers with color display effects at a lower price.
  • FIG. 1A is an exploded perspective view of a beautiful color LCD of the present invention
  • FIG. 1B is an exploded perspective view of another embodiment of the beautiful color liquid crystal display of the present invention
  • FIG. 2 is a partial cross-sectional view of an assembly state of the beautiful color liquid crystal display of the present invention when applied to a mobile phone;
  • FIG. 3A is a front view of a pretty picture in the present invention.
  • FIG. 3B is an enlarged cross-sectional view of the beautiful picture shown in FIG. 3A along line A-A;
  • FIG. 4A is an exploded view of a beautiful picture with a two-layer structure in the present invention.
  • FIG. 4B is an exploded view of a beautiful picture with a three-layer structure in the present invention.
  • FIG. 4C is an exploded view of a beautiful picture with a four-layer structure in the present invention.
  • FIG. 5 is a schematic structural diagram of a first embodiment of a light guide plate in the present invention
  • 6A and 6B are schematic structural diagrams of a second embodiment of a light guide plate in the present invention
  • FIG. 7 is a schematic structural diagram of a third embodiment of a light guide plate in the present invention.
  • a beautiful color liquid crystal display provided according to the present invention includes at least one liquid crystal display portion 1, which is characterized in that: the liquid crystal display portion 1 includes a liquid crystal display screen 11, a light guide plate 13, and The beautiful picture 12 between the liquid crystal display 11 and the light guide plate 13 is described.
  • the LCD circuit board 2 is electrically connected to the liquid crystal display section 1 and drives the liquid crystal display 11 so as to display information on the liquid crystal display 11.
  • the liquid crystal display screen 11 may be a translucent liquid crystal display screen, and when the backlight is not used, the display effect is not affected by 12 of the colorful picture. 'Among them, in a preferred solution provided by the present invention, the liquid crystal display screen 11 is a fully transparent liquid crystal display screen.
  • the advantage of using a fully transparent liquid crystal display is that it has a high light transmittance and can transmit a beautiful picture effect without a backlight.
  • the brightness of the backlight of the liquid crystal display can be enhanced with a backlight, that is, Improve the utilization of LCD backlight.
  • a black and white liquid crystal display because of the presence of a grid, usually only a translucent liquid crystal display can be used.
  • a colorful picture 12 is added between the liquid crystal display 11 and the light guide plate 13, a full transparent liquid crystal display can be used.
  • the light guide plate 13 is a transparent material that allows light to diffuse and be evenly distributed therein.
  • the light guide plate 13 is disposed on the inner side of the beautiful color picture 12 and can provide a uniformly distributed backlight for the beautiful color picture 12.
  • the light-reflecting sheet 14 may be a PVC (Polyvinyl chloride) sheet having a light-reflecting film on the surface, and may reflect the light received on the surface (including the light leaking from the bottom surface of the light guide plate 13) back to the light guide plate 13, It is used to enhance the brightness of the backlight, and also improves the light utilization rate.
  • PVC Polyvinyl chloride
  • the LCD circuit board 2 is located at the innermost side of the beautiful color liquid crystal display of the present invention. At least one light emitting diode 21 is soldered to the LCD circuit board 2 and is disposed on a side or an adjacent side of the light guide plate 13. Since the backlight source, that is, the LED 21 is installed near the light guide plate, the backlight brightness of the liquid crystal display screen 11 is uniform, thereby reducing shadows on the display.
  • the light emitting diode 21 is a white light source, so that the colors and patterns of the beautiful picture 12 can be fully reflected.
  • a protective screen 15 is added on the outside of the liquid crystal display screen 11, and a diffusion sheet 16 is added between the beautiful color picture 12 and the light guide plate 13.
  • the protection screen 15 is a liquid crystal protection screen for holographic images. It is a type of liquid crystal protection screen formed by using holographic technology processing, so that the liquid crystal display section 1 is illuminated by external light without backlight, and The protection screen 15 displays a holographic stereoscopic image effect, and in the case of having a backlight, it does not affect the normal use effect.
  • the diffusion sheet 16 can eliminate the grid displayed on the liquid crystal display 11 due to the grating on the light guide plate 13 and make the emitted light more evenly distributed. At the same time, it can ensure that no reflection points can be seen from the front of the liquid crystal display section. Shadow, thereby further enhancing the display effect.
  • FIG. 2 it is a schematic partial cross-sectional view of an assembled state of the beautiful color liquid crystal display of the present invention when it is installed in a mobile phone.
  • a transparent liquid crystal protection screen needs to be provided on the outside to protect the bright-color liquid crystal display and its internal structure.
  • the display installation part of the mobile phone body 5 is a transparent liquid crystal protection screen 15, a liquid crystal display screen 11, a beautiful color picture 12, a light guide plate 13, a reflective sheet 14 and an LCD circuit board 2 from the outside to the inside.
  • FIG. 3A is a front view of a colorful picture in the present invention.
  • the display area 121 of the beautiful picture 12 that is, the area that can be seen by the user, can be printed with various colored patterns. These patterns are used as the background pattern of the color phone, and the pattern can be a green grass sky or a red ribbon and Other humanities Landscape, etc., as shown in the figure is a beautiful map of the Jiangnan water village.
  • the non-display area 122 of the colorful picture is an area invisible to the user, and is used to fix the liquid crystal display 11 and the light guide plate 13.
  • FIG. 3B it is an enlarged cross-sectional view of the beautiful picture shown in FIG. 3A along the line A-A.
  • a double-sided adhesive tape 123 may be further provided on the upper surface 124 or the lower surface 125 of the beautiful picture 12, or a double-sided adhesive tape may be provided on the upper surface 124 and the lower surface 125 at the same time, so as to be separately displayed with the liquid crystal
  • the screen 11 and / or the light guide plate 13 are bonded.
  • the double-sided tape is disposed on the non-display area 122 of the upper surface 124 and the lower surface 125 of the beautiful picture and forms a rectangular circular pattern so as to be firmly fixed.
  • the beautiful picture 12 is between the liquid crystal display 11 and the light guide plate 13.
  • the double-sided tape acts as a seal to prevent moisture or dust from penetrating into the pretty picture 12 and the LCD screen 11 and / or penetrating between the pretty picture 12 and the light guide plate 13.
  • the upper surface 124 and / or the lower surface 125 of the beautiful picture 12 can be made into a dull surface, so that it can be avoided during the installation process when the beautiful picture 12 and the LCD screen, the guide Bubbles and shadows are produced when light surfaces such as light plates are in close contact.
  • the material of this beautiful picture is polyethylene terephthalate plastic, usually referred to as polyester sheet, that is, PET plastic sheet.
  • PET plastic sheet polyethylene terephthalate plastic
  • a color pattern can be directly printed on the upper surface 124 of the PET plastic sheet 126, such as the Jiangnan Water Village map shown in FIG. 3A.
  • the color pattern may be directly on the lower surface 125 of the PET plastic sheet 126.
  • color patterns are printed on the upper and lower surfaces of the PET plastic sheet 126, respectively, so as to form a color pattern with a three-dimensional synthetic effect.
  • the colorful picture 12 may have a two-layer structure consisting of only a picture layer 20 and a PET substrate layer 22, wherein the picture layer 20 is opposite to the liquid crystal display 11 and the PET substrate layer 22 is opposite to the light guide plate. 13 relative. The reverse is also true, that is, the picture layer 20 is opposed to the light guide plate 13, and the PET substrate layer 22 is opposed to the liquid crystal display 11.
  • This beautiful color picture has a simple structure, small size, and light weight under the condition of ensuring that the picture is installed firmly and reliably.
  • the bright color picture 12 may have a three-layer structure composed of a thin film layer 23, a picture layer 20, and a PET substrate layer 22 laminated in this order.
  • the thin film layer 23 is opposite to the liquid crystal display 11 and the PET-based
  • the material layer 22 is opposite to the light guide plate 13.
  • the thin film layer 23 protects the picture layer.
  • the colorful picture 12 may also have a three-layer structure composed of the picture layer 20, the PET base material layer 22, and the semi-permeable film layer 24 which are sequentially stacked.
  • the screen 11 is opposed, and the semi-permeable film layer 24 is opposed to the light guide plate 13.
  • the semi-permeable film layer 24 plays a role of further uniforming light.
  • the colorful picture 12 may also have a four-layer structure composed of a thin film layer 23, a picture layer 20, a PET substrate layer 22, and a semi-permeable film layer 24 stacked in this order.
  • the thin film layer 23 is opposed to the liquid crystal display 11, and the semi-permeable film layer 24 is opposed to the light guide plate 13.
  • the semi-permeable film layer 24 in FIGS. 4B and 4C may be a bright film or a dumb film, and the transparency of the bright film is better.
  • FIG. 5 is a schematic structural diagram of a first embodiment of a light guide plate according to the present invention.
  • one side of the light guide plate 13 has a notch 133 corresponding to the light emitting diode 21 on the LCD circuit board 2.
  • the light emitting diode 21 on the LCD circuit board 2 is provided at a notch 133 at the outer end of the inclined portion 132 extending outward of the light guide plate 13.
  • the light-emitting diode 21 on the LCD circuit board is located in the notch 133 on the light guide plate 13 described above, so that more light can enter the light guide plate 13 to improve the effect of the backlight. .
  • the light emitting diode 21 emits bright light under the action of the driving circuit on the LCD circuit board 2, and generates a backlight with uniform brightness through the light guide plate 13 described above, and further enhances the backlight through the reflective sheet 14 provided inside the light guide plate 13. strength.
  • the adoption of all the above measures has further enhanced the color display effect.
  • the acute angle between the hypotenuse of the inclined portion 132 and the horizontal direction is 15 to 30 degrees. This angle is designed to reflect light and make the LED backlight brightness more uniform.
  • a plurality of positioning cards 1311 are also provided around the light guide plate 13 to match the beautiful picture 12 Positioning with the liquid crystal display 11.
  • FIGS. 6A and 6B are schematic structural diagrams of a second embodiment of a light guide plate according to the present invention.
  • the side of the light guide plate 13 is formed with an inclined portion 132 extending at least outwardly.
  • the inclined portion 132 is formed of a trapezoidal portion 134 and a rectangular portion 135 connected to the upper and lower portions of the trapezoidal portion 134.
  • the rectangular portion 135 is formed with a semicircular groove 136.
  • the light guide plate 13 is installed in a frame 3, and one side of the frame 3 has a trapezoidal structure 142 capable of accommodating the inclined portion 132 and a rectangular structure 143 connected to the upper bottom of the trapezoidal structure 142.
  • the LED is disposed in the cavity 131 formed between the groove 136 and the inner wall of the rectangular structure 143, and is electrically connected to the circuit board 2 through an FPC (flexible circuit) 22.
  • the above structure can make the inclined portion 132 fit better with the frame 3, and at the same time, the light can be well introduced into the light guide plate 13, thereby improving the utilization rate of the light.
  • the bottom angle ⁇ of the trapezoidal portion 134 of the inclined portion 132 is between 15 degrees and 30 degrees, so that the light guiding effect of the trapezoidal portion 134 can be better.
  • a plurality of positioning stops are formed around the frame 3 for positioning the colorful picture 12 and the liquid crystal display 11 for easy installation.
  • FIG. 7 is a schematic structural diagram of a third embodiment of a light guide plate according to the present invention.
  • the inclined portion 132 is triangular, and a semi-circular groove 136 is formed at a top corner 137 thereof.
  • the LED is located in the groove 136.
  • the angle ⁇ between the long hypotenuse of the inclined portion 132 and the horizontal direction is 15 degrees to 30 degrees.
  • the above structure can also realize uniform hook introduction of light, and the structure is simple at the same time, which is favorable for processing.
  • each inclined portion corresponds to a backlight source, the brightness of the backlight is increased, and the display effect is enhanced.
  • the beautiful color LCD display adopts a "beautiful color structure", that is, a "false color structure”.
  • the combination of beautiful color pictures and black and white LCD displays is used to replace the existing black and white LCD displays and true color LCD displays.
  • the backlight and the light guide plate to achieve the color display effect not only can display color images well, but also low cost, simple structure, convenient processing, small size, light weight, low energy consumption, can be widely used in the need of color display effects Electronic device.
  • a mobile phone manufacturer can configure a colorful picture with various patterns on the color screen structure for its own mobile phone product, and consumers can choose to buy according to their own preferences.
  • consumers can also set different display screens.
  • the display screen can display a beautiful Jiangnan water village map. In this way, when the mobile phone is in working state, the user will see "a crescent-shaped ship" The fishing boat swayed gently on the lake surface, and the fishing boat and the red intoxicating maple leaves reflected on the sparkling lake surface, such a vivid color picture.
  • the beautiful color liquid crystal display of the invention has the advantages of simple structure, convenient processing, low cost, low power consumption, and beautiful color display effect, and can be widely applied to electronic equipment that requires the effect of a color liquid crystal display.

Abstract

La présente invention concerne un afficheur couleur à cristaux liquides comprenant au moins une partie afficheur à cristaux liquides, caractérisé en ce que ladite partie afficheur à cristaux liquides inclut un écran d'afficheur à cristaux liquides, un panneau guide de lumière, et une image couleur interposée entre ledit écran d'afficheur à cristaux liquides et ledit panneau guide de lumière, qui sont en chevauchement les uns avec les autres. L'afficheur couleur à cristaux liquides a de nombreux avantages, et notamment, simplicité de structure, facilité de fabrication, faible coût, consommation d'énergie réduite, et effets d'affichage colorés, ce qui fait qu'il pourrait être largement utilisé dans des dispositifs électroniques à afficheur couleur à cristaux liquides.
PCT/CN2004/000215 2003-11-27 2004-03-18 Afficheur couleur a cristaux liquides WO2005052675A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CNU2003201221808U CN2621371Y (zh) 2003-11-27 2003-11-27 一种手机的彩屏结构
CN 200320122176 CN2901365Y (zh) 2003-11-27 2003-11-27 一种彩屏结构
CN200320122180.8 2003-11-27
CN200320122182.7 2003-11-27
CN200320122176.1 2003-11-27
CNU2003201221827U CN2621372Y (zh) 2003-11-27 2003-11-27 手机的彩屏结构

Publications (1)

Publication Number Publication Date
WO2005052675A1 true WO2005052675A1 (fr) 2005-06-09

Family

ID=34636791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/000215 WO2005052675A1 (fr) 2003-11-27 2004-03-18 Afficheur couleur a cristaux liquides

Country Status (1)

Country Link
WO (1) WO2005052675A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1164820A (ja) * 1997-08-20 1999-03-05 Nec Corp 平面表示装置
JP2001166300A (ja) * 1999-12-06 2001-06-22 Seiko Epson Corp バックライト内蔵型液晶表示装置及びその製造方法
US6295113B1 (en) * 1998-12-16 2001-09-25 Picvue Electronics, Ltd. Twisted nematic color liquid crystal display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1164820A (ja) * 1997-08-20 1999-03-05 Nec Corp 平面表示装置
US6295113B1 (en) * 1998-12-16 2001-09-25 Picvue Electronics, Ltd. Twisted nematic color liquid crystal display
JP2001166300A (ja) * 1999-12-06 2001-06-22 Seiko Epson Corp バックライト内蔵型液晶表示装置及びその製造方法

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