WO2015043317A1 - 用边缘显示消除液晶显示屏拼接边框的装置 - Google Patents

用边缘显示消除液晶显示屏拼接边框的装置 Download PDF

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Publication number
WO2015043317A1
WO2015043317A1 PCT/CN2014/083680 CN2014083680W WO2015043317A1 WO 2015043317 A1 WO2015043317 A1 WO 2015043317A1 CN 2014083680 W CN2014083680 W CN 2014083680W WO 2015043317 A1 WO2015043317 A1 WO 2015043317A1
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WIPO (PCT)
Prior art keywords
frame
display
liquid crystal
edge
layer
Prior art date
Application number
PCT/CN2014/083680
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English (en)
French (fr)
Inventor
夏展敏
丁炜慷
Original Assignee
夏展敏
丁炜慷
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Filing date
Publication date
Application filed by 夏展敏, 丁炜慷 filed Critical 夏展敏
Priority to AU2014328165A priority Critical patent/AU2014328165B2/en
Priority to JP2016517511A priority patent/JP6348975B2/ja
Priority to EP14849771.2A priority patent/EP3051524A4/en
Priority to KR1020167009600A priority patent/KR101838096B1/ko
Publication of WO2015043317A1 publication Critical patent/WO2015043317A1/zh
Priority to US15/076,666 priority patent/US10146077B2/en

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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
    • G02F1/13336—Combining plural substrates to produce large-area displays, e.g. tiled displays
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
    • G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details

Definitions

  • the invention relates to a scheme for integrating edge display and liquid crystal display, so that the integrated liquid crystal screen becomes a "seamless" display system of "full area” and “large viewing angle”, and the spliced liquid crystal screen reaches "seamless” The effect displayed.
  • FIG 1 shows the situation of 2 (row) X 2 (column) 4 LCD screens (the diagonal after stitching is 120 inches) . If you enter a circle with 4 notches and crosses (as wide as the width of the black box) to the center of the 2x2 splicing screen (see Figure 2), the result is 4 notches, a cross, and the same width as the black box. The video image is not shown (see Figure 3).
  • the display with the black border of the video a has the width of the black box b after the stitching "replaces” or "occupies” some images of the input video. This is a fatal flaw in displaying data, curves, trajectories, a point on the map (global positioning), and so on.
  • the display with the black border of the video a has the width of the black box b after the stitching "replaces” or "occupies” some images of the input video. This is a fatal flaw in displaying data, curves, trajectories, a point on the map (global positioning), and so on.
  • In order to manufacture more than 120 inches of overall display there are many obstacles in terms of investment scale, production equipment, material strength, yield, transportation and installation, etc., and it is also uneconomical.
  • the "unit cost per unit" of the 80- to 120-inch monolithic display is increased exponentially with the screen size, and with the splicing screen, the cost increases linearly with the splicing size, ie its "cost per unit area". It is basically the same.
  • the specific performance of the black box without video is as follows:
  • LCD Liquid Crystal
  • LCD is the most widely used display that has reached Digital Ultra HD (4K).
  • the LCD screen c can display the edge of the signal line embedded in the area, and the edge has no video display (2 ⁇ 4 mm on one side and 4 ⁇ 8 mm on both sides after stitching).
  • the black box cannot be avoided after the LCD screen is spliced into a large screen (see Figure 5).
  • Passive Passive mainly uses the optical principle of reflection or refraction to visually "cover” the black box, which does not "restore” the original input video over the width of the black box.
  • optical principle of reflection or refraction to visually "cover” the black box, which does not "restore” the original input video over the width of the black box.
  • the optical amplifying plate optical amplifying plate i is based on the principle of optical fiber transmission, and the pixel pitch of the light input layer (bottom layer) is equally spread to the light output layer (top layer), so that the bottom layer is in one-to-one correspondence with the liquid crystal panel C pixels, and the top layer is diffused to the liquid crystal containing layer.
  • the outer diameter of the black border a see Figure 14). White to avoid the black “blackout” of the black border and the contrast between the display area and the black, the black border The black color is changed to "white” or “silver gray” to flatten this "shock", but when the original input video expresses black elements, the "white” border still produces a visual "shock".
  • Active Proactive is a "replacement display” of a video image that is “replaced” or “occupied” by a black box on the black border width of the video, so that "restores the display” on the width of the black border of the LCD screen.
  • the video image is merged with the video image displayed on the display area of the LCD screen into a video image identical to the original input.
  • This is an edge display, and the pixels that need to "restore the display” in the edge display can be realized by LED or OLED, and the corresponding circuit.
  • the most essential difference between it and other forms of "covering" black box is: “ Resume the display of the "black box” instead of "or” occupied video image (see Figure 15).
  • the black box of the other display screens is as follows: 2.0.0 Rear projection (DLP) display
  • the rear projection uses the back projection method to make the display. Since the projection screen is fixed on the very thin end face of the frame, the black border a of the rear projection without video is narrower (1.5 mm on one side and 3 mm on both sides after stitching) (see Figure 16). But no matter how narrow these black borders are, the rear projection still has a black box after splicing.
  • rear projection is an old generation display technology, which has many limitations and defects, such as low brightness, low resolution (cannot achieve high definition, ultra high definition), short life, high maintenance cost, and large thickness. , need to maintain space behind.
  • Plasma is a "self-illuminating" pixel display technology that allows these "self-illuminating” pixels to be placed on the "most" edge of the display. However, these "self-illuminating” pixels still need support, so the structural thickness supporting these "self-illuminating” pixels is the black border without video (1.5 mm on one side and 3 mm on both sides after stitching).
  • LED displays are very common. However, LED displays generally do not have a high definition (2K) display, and it is more difficult to display ultra high definition (4K). At present, the pixel pitch of the LED display can be made up to 1.9 mm. Digital HD standard 1920 x 1080, high-definition (2K) video images can only be fully displayed when the size of the LED display reaches 2052 x 3648 mm, ie (1. 9 X 1920) X (1. 9 x 1080).
  • OLED is a new type of display technology, but it is still in the experimental stage. It will take time for the big screen made of OLED to be a few meters or even a dozen meters. In summary, liquid crystals, rear projections, and plasmas with black borders are temporarily unable to achieve "seamless" stitching, that is, when they are stitched, a black box is generated.
  • the object of the present invention is to solve the above problems in the prior art that the display screen has a black frame with no video after being spliced into a large screen, and provides a scheme for integrating edge display and liquid crystal display, and active
  • the edge display merges with the liquid crystal display to display the original input video image, and adopts the technical solution of the present invention, making "seamless" splicing possible.
  • Active mode displays video content on the black border width of the LCD screen. This video content is originally "replaced” or "occupied” by the width of the black box, and at the same time, the video displayed on the black border width of the LCD screen.
  • the video displayed on the LCD screen is merged into a video image identical to the input to form a "seamless" display system.
  • the display video on the width of the black border is realized by the display unit LED/OLED and its corresponding circuit.
  • the invention designs a device for eliminating the splicing frame of the liquid crystal display by using the edge display, wherein: the edge display unit is arranged on the splicing frame of the liquid crystal display, and the illuminating layer is arranged on the edge display unit as the display surface of the edge display unit.
  • the original input video image is displayed in combination with the display area of the LCD screen.
  • the frame of the liquid crystal display panel is a composite structure of an inner layer frame and an outer layer frame, wherein the light homogenizing layer is a black, transparent, thin shell elongated light body, and the edge display unit is an LED display unit.
  • the flexible circuit, the inner bottom edge of the light homogenizing layer on the edge display unit is connected to the inner layer frame of the liquid crystal display composite frame, and the outer side surface of the light homogenizing layer on the edge display unit and the outer layer of the liquid crystal display composite frame
  • the box is connected.
  • the flexible circuit of the LED display unit of the edge display unit is guided from the front surface of the liquid crystal panel containing the backlight to the back surface thereof, and is coupled with the corresponding driving and control circuit.
  • the inner and outer edges of the uniform layer are provided with arcs.
  • the bottom is provided with stitches at a certain interval, and the inner layer frame of the frame of the liquid crystal display is provided with the same interval of through holes, the stitches of the uniform layer pass through the through holes of the inner frame, and the pins are thermocompression bonded with the inner frame .
  • the top of the inner layer of the uniform layer is provided with a card position, and the card position positions the relative position of the LED of the edge display unit and the inner frame, and the card position is set at the outer portion of the LED of the edge display unit and the 120° clip of the lower portion of the LED. Beyond the corner.
  • a groove is provided on the outer side surface of the light-homogenizing layer, and the groove is disposed outside the light-emitting vertebral body of the LED of the edge display unit and outside the 120° angle of the lower portion.
  • the maximum outer diameter of the inner layer frame, the LED flexible circuit of the edge display unit, and the thickness of the outer layer frame is smaller than the display boundary of the uniform layer.
  • the outer frame of the composite frame and the outer groove of the light-homogenizing layer are connected by a snap.
  • the inner flexible frame, the LED flexible circuit of the edge display unit, and the outer frame are provided with the same through hole in the installation position of the backlight containing liquid crystal panel, and the inner flexible frame, the light-shielding layer, the LED flexible circuit of the edge display unit, and the outer frame are located
  • the fixing plug in the through hole is on the liquid crystal panel with the backlight.
  • the back side of the LED flexible circuit of the edge display unit is placed against the inner frame so that the LED can dissipate heat and can conduct outward.
  • the conductive area of the LED flexible circuit of the edge display unit is wrapped by the light-shading layer such that the LED flexible circuit of the edge display unit is in an insulated state.
  • the edge display is fused with the video image of the displayable area of the liquid crystal screen in the form of a surface light source, and the technical solution for converting the LED point light source in the edge display into the surface light source makes it well integrated.
  • the video image of the liquid crystal display Allow a large viewing angle of 75° (angle with the normal of the LCD screen), that is, a 150° range to view the spliced LCD screen (a larger viewing angle will expect the LCD screen itself to have a better viewing angle at a larger viewing angle) Display characteristics);
  • the presence of the edge display is basically indistinguishable (the remaining 20% of the video images will look better aligned between the spliced LCD screens); although the edge display is 2 mm higher than the LCD screen Left and right, but when viewed from 2 to 3 meters, the height difference is less than 1/1000, it will not become a visual obstacle, that is, the basic resolution will not be revealed, and the edge video displayed at this height will be lost because of "
  • the video image makes the stitched image tend to be complete; it is this technical solution that integrates the edge display into the liquid crystal display, making it a seamless display.
  • the whole screen greatly reduce the transport, use and technical requirements of the stitching, which greatly expanded the application of this seamless display.
  • Figure 1 shows a liquid crystal splicing screen with a black border.
  • the middle shows a black box with a diameter of about 7 mm.
  • Figure 2 shows a circle with four notches and a cross. The gap and the cross are as wide as the black box.
  • Figure 3 For 4 gaps, crosses and their video frames with the same width as the black box, the display is missing.
  • Figure 4 shows the "all" display of the input video image. The original video image is "split”.
  • Figure 5 is a schematic cross-sectional view of a typical liquid crystal panel. 6 is the mirror surface on the black border of the LCD screen.
  • Figure 7 is a "repeated display" after the video image of the liquid crystal displayable area edge is reflected,
  • Figure 9 is the "arc” bow column and the LCD screen
  • Figure 10 is “vertical” at the bottom of the “arc”
  • the black box of the LCD screen is narrower than the original
  • Figure 1 1 and “arc” The bottom normal line is viewed at 30°
  • the black frame of the LCD screen is wider than the original.
  • Figure 12 is viewed at 45° from the normal line of the “arc”. The larger the angle of view, the wider the black box.
  • Figure 13 is 60° from the normal to the bottom of the arc. The larger the angle of view, the wider the black box.
  • Figure 14 is an optical magnifying plate
  • FIG. 15 is a schematic diagram of an integrated technology of edge display and liquid crystal display according to the present invention
  • FIG. 16 is a schematic diagram of a principle of a rear projection display.
  • Figure 17 shows the black box after the plasma display is spliced.
  • FIG. 18 is a schematic diagram of the basic structure of the present invention
  • FIG. 19 is a schematic structural view of the inner frame, the light-homogenizing layer, the display unit and the outer frame of the present invention
  • FIG. 20 is a circular arc structure of the inner and outer edges of the light-homogenizing layer of the present invention
  • FIG. 21 is a schematic view showing the pin insulation structure of the LED display unit of the present invention
  • FIG. 22 is a schematic structural view of the stitches at the bottom of the inner side of the light-homogenizing layer of the present invention
  • FIG. 23 is a schematic structural view of the stitching layer of the light-shielding layer passing through the inner layer frame through-hole and thermocompression bonding
  • FIG. 24 is a schematic view showing the card structure of the inner layer top of the light-homogenizing layer of the present invention
  • FIG. 25 is a schematic structural view of a groove on the outer side surface of the light-shielding layer and a structure in which the outer layer frame and the light-homogenizing layer are fastened
  • FIG. 26 is a view showing that the outer layer frame and the light-homogenizing layer are less than the light-homogenizing layer after being fastened
  • FIG. 27 is a schematic view showing the structure of the inner layer frame, the light-homogenizing layer, the LED flexible circuit, and the outer layer frame fixed to the liquid crystal panel, and the flexible circuit is guided to the back surface of the liquid crystal panel.
  • FIG. 28 is a schematic structural view of the LED edge display unit and the flexible circuit replacement and maintenance thereof according to the present invention.
  • the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A device for eliminating a splicing frame of a liquid crystal display by using an edge display is characterized in that: an edge display unit is disposed on the splicing frame of the liquid crystal display, and a light concentrating layer is disposed on the edge display unit as a display surface of the edge display unit, The original input video image is displayed in combination with the display area of the LCD screen.
  • the frame of the liquid crystal display panel is a composite structure of an inner layer frame and an outer layer frame, wherein the light homogenizing layer is a black, transparent, thin shell elongated light beam, and the edge display unit is an LED display unit.
  • the flexible circuit, the inner bottom edge of the light homogenizing layer on the edge display unit is connected to the inner layer frame of the liquid crystal display composite frame, and the outer side surface of the light homogenizing layer on the edge display unit and the outer layer of the liquid crystal display composite frame The box is connected.
  • the flexible circuit of the LED display unit of the edge display unit is guided from the front surface of the liquid crystal panel containing the backlight to the back surface thereof, and is coupled with the corresponding driving and control circuit.
  • the inner and outer edges of the uniform layer are provided with arcs.
  • the inner bottom of the uniform layer is provided with stitches at a certain interval, and the inner layer frame of the frame of the liquid crystal display is provided with the same spaced through holes, the stitches of the uniform layer pass through the through holes of the inner frame, the stitches and the inner layer
  • the frame is thermocompression bonded.
  • the top of the inner layer of the uniform layer is provided with a card position, and the card position positions the relative position of the LED of the edge display unit and the inner frame, and the card position is set at the outer portion of the LED of the edge display unit and the 120° clip of the lower portion of the LED. Beyond the corner.
  • a groove is provided on the outer side surface of the light-homogenizing layer, and the groove is disposed outside the light-emitting vertebral body of the LED of the edge display unit and outside the 120° angle of the lower portion.
  • the maximum outer diameter of the inner layer frame, the LED flexible circuit of the edge display unit, and the thickness of the outer layer frame is smaller than the display boundary of the uniform layer.
  • the outer frame of the composite frame and the outer groove of the light-homogenizing layer are connected by a snap.
  • the inner flexible frame, the LED flexible circuit of the edge display unit, and the outer frame are provided with the same through hole in the installation position of the backlight containing liquid crystal panel, and the inner flexible frame, the light-shielding layer, the LED flexible circuit of the edge display unit, and the outer frame are located
  • the fixing plug in the through hole is on the liquid crystal panel with the backlight.
  • the back side of the LED flexible circuit of the edge display unit is placed against the inner frame so that the LED can dissipate heat and can conduct outward.
  • the conductive area of the LED flexible circuit of the edge display unit is wrapped by the light-shading layer such that the LED flexible circuit of the edge display unit is in an insulated state.
  • the invention provides a method for integrating an edge display into a width surface of a black border of a liquid crystal screen having a size of about 2 to 4 mm, which is characterized in that: the edge display is not added to the width of the original black border of the liquid crystal screen.
  • Black border or no new video-free area, that is, the maximum outer diameter of the "overall” formed by the edge display on the width of the original black border of the LCD screen, and any part of the projection plane, and the liquid crystal display
  • this scheme also makes the edge display have the following characteristics: Accurate positioning of the edge display On the LCD panel with backlight, the pixels displayed on the edge correspond to the pixels of the liquid crystal display, so that the edge display and the liquid crystal display can be fused and synthesized to synthesize the original input video image; and the edge display is integrated with the backlight-containing liquid crystal panel as a """Overall", it is transported, installed and spliced as a whole; at the same time it operates with a black screen with a black border Spend no substantial difference (in addition to the display effect Outside, instead of splicing the LCD screen with black borders, it is achieved by
  • the liquid crystal glass Maintains the characteristics of the liquid crystal glass, and has the same strength, rigidity and safety (the liquid crystal glass will not be damaged); and when the input video needs to represent a black image element, the black element can be reflected at the corresponding position of the edge display. And making the circuitry in the edge display sufficiently insulated; and allowing the LEDs of the pixel display unit of the edge display to dissipate heat and can conduct outward; and cause the LED flexible circuitry in the edge display to be directed from the front side of the backlit liquid crystal panel to The back side is coupled with the corresponding driving and control circuit; and the LED of the pixel display unit and the flexible circuit thereof in the edge display are replaceable and maintainable.
  • the LEDs embedded in the flexible lines are used as pixel display units in the edge display. This can be done by soldering the LEDs on the three-primary package to the flexible line, or by directly bonding and packaging the LED tri-color chip to the board (COB, Chip on Board), depending on the density of the LEDs being designed. If the packaged LED particles are soldered on a flexible line, the edge display pixel pitch can be 1 ⁇ 1.5 mm; if COB is used, the display pixel pitch can be less than 1 mm, and the pixel pitch of the splicing LCD screen is very Close.
  • the LEDs in the form of packages or COBs referred to herein, and the OLEDs referred to are collectively referred to as display unit LEDs.
  • the plasma (PDP) has a black border like the liquid crystal screen, and the technical solution of the present invention can also be implemented on a plasma (PDP).
  • the implementation of the invention on the liquid crystal screen as referred to herein also includes implementation on a plasma (PDP). Collectively referred to as the LCD screen.
  • the edge display is composed of an inner layer frame 1, a light concentrating layer 2 and an outer layer frame 3, which can place the display unit LED and its flexible circuit 4 Wherein, as shown in FIG. 18 and FIG.
  • the light-homogenizing layer is covered on the LED of the display unit, and the inner and outer edges of the light-homogenizing layer are provided with an arc 5, so that the LED display pixels are bright on the display surface of the uniform layer, such as Figure 20 is a view;
  • the light-shading layer is composed of a black, transparent, thin shell, strip-shaped homogenizer, such that black is reflected when the original input video needs to express a black element;
  • the light-homogenizing layer is composed of an insulating material, and encloses the display unit LED
  • the bare part of the circuit makes the LED bow
  • the inner bottom of the smoothing layer is provided with stitches 7 at a certain pitch, as shown in Figure 22, the inner frame of the composite frame
  • the through holes having the same interval are formed on the upper layer, and the stitches of the light-homogenizing layer are passed through the through holes of the inner frame, and are connected by thermocompression bonding 8, as shown in FIG
  • the inner frame is completely placed on the uniform layer.
  • the top of the inner layer of the light homogenizing layer is provided with a series of card positions 9, which are distributed at an appropriate density along the direction of the LED array, and are disposed outside and below the LED 120° light-emitting vertebral body.
  • Positioning the display unit LEDs and the shimming layer, as well as the LEDs The relative position between the inner frame is as shown in Fig. 24; the outer side of the light homogenizing layer is provided with a groove 10 which is disposed outside the LED 120° illuminating body and below, and does not block the LED pixels.

Abstract

一种用边缘显示消除液晶显示屏拼接边框的装置，包括：在液晶显示屏拼接边框上设置边缘显示单元，在边缘显示单元上设置匀光层作为边缘显示单元的显示表面，与液晶屏可显示区域合成显示原输入视频图像。所述边缘显示是以面光源形式与液晶屏可显示区域的视频图像相融合，将边缘显示中的LED点光源转化成面光源，融入了液晶显示的视频图像中；允许大视角75°（与液晶屏法线夹角），即150°范围观看拼接后的液晶屏，恢复显示的原来丢失的视频图像使拼接后的图像趋于完整；成为一个无缝隙显示屏整体，降低了运输、使用和拼接时的技术要求，拓展了无缝显示屏的应用。

Description

Figure imgf000003_0001
用边缘显示消除液晶显示屏拼接边框的装置
技术领域
本发明涉及一种边缘显示与液晶显示集成的方案， 使得集成后的液晶屏成为一个 "全 面积" "大视角"的 "无缝"显示系统， 并使得拼接后的液晶屏达到 "无缝"显示的效果。 背景技术
数字高清 （2K)， 超高清 （4Κ) 的大屏幕显示已经扮演着越来越重要的角色。 但是显示 屏在拼接成大屏幕后都带有无视频的黑格框， 图 1为 2(行） X 2(列） 4台液晶屏拼接后的情 况 （拼接后对角线为 120 英吋)。 如果输入一个带有 4 个缺口与十字形 （与黑格框宽度一 样宽） 的圆到 2x2拼接屏的中心 （见图 2)， 结果是 4个缺口、十字形及其与黑格框等宽的 视频图像没有显示出来， （见图 3)。 如果将输入信号全部显示出来， 结果是不能接受的， 因 为输入视频图像 "分裂"了， 黑格框 b的宽度成了视频图像的一部分 （见图 4)。 因此， 带 有无视频的黑边框 a的显示屏在拼接后黑格框 b的宽度 "替代"或者 "占据"输入视频的 某些图像。 这对于显示数据、 曲线、 轨迹、 地图上某一点 （全球定位） 等都是致命的缺陷。 而要制造超过 120英吋以上的整体显示屏在投资规模、生产设备、材料强度、成品率、 运输安装等方面都存在很多障碍， 也很不经济。 制造 80 ~ 120 英吋的整块显示屏的 "单 位面积成本"是随着屏体尺寸以指数形式上升的， 而采用拼接屏， 成本是随拼接尺寸线性 增加的， 即其 "单位面积成本"是基本不变的。 对于不同类型的显示屏用于拼接， 无视频的黑格框的具体表现如下：
1 .0.0液晶 （LCD) 显示屏： 液晶是目前使用最广泛， 已经达到数字超高清 （4K) 的显示屏。 但是液晶屏 c可显示 区域周边有嵌印着信号线路的边缘， 而这个边缘"无视频 "显示 （单边 2 ~ 4 mm， 拼接后 双边 4 ~ 8 mm)。无论这个边缘多么窄，在液晶屏拼接成大屏幕后仍然无法避免黑格框，（见 图 5)。 为了避免这些黑格框， 有 "被动"与 "主动"两类方式来处理：
1 .1 .0 被动式 被动式主要是利用反射或折射的光学原理从视觉上来 "遮盖"黑格框， 它不能 "恢 复显示"黑格框所占宽度上的原始输入视频。 一般有以下几种形式：
1 .1 .1 反光 用四周与液晶屏 c成 45° 的反光镜面 d覆盖在液晶屏 c原来的黑边框 a上， 使得 液晶屏 c可显示区域靠近黑边框 a边缘的视频在 45° 反光镜面中 "重复显示 "e， 造成一种没有黑格框的视觉效果 （见图 6)。 但是它仍然无法显示原输入视频的 4 个缺口与十字形； （见图 7)。 放大 (见图 8~12) a)用透明材料 f制作一块与液晶屏大小一样，有一定厚度的材料覆盖在原来的液晶 屏 c上， 并在这块透明材料 f 的边缘沿厚度 g方向制成 "圆弧" ， 而这个 "圆弧" 具有放大液晶屏 c可显示区域周边视频的作用 （见图 8)， b) 直接制作一个透明 "圆弧" 弓柱 h， 在液晶屏 c拼接后将该 "圆弧" 弓柱 h贴 合在液晶屏 c拼接黑边框 a上 （见图 9)。 上述无论哪种方式， 当垂直 "圆弧 "底边 A观看时， "圆弧"对液晶可显示区域周 边视频的放大作用起到了部分遮盖黑格框的效果 （见图 9、 图 10)。 但相反， 在不垂直 "圆弧"底边 B观看时 (见图 9)， "圆弧"却把液晶屏的黑格框 "放大 "得更宽了， 并随着该角度的增加， 黑格框的宽度越宽， 视角为 30o， （见 图 1 1 ); 为 45 o， （见图 12); 为 60 o， （见图 13)。 而对于几米，十几米甚至更大尺寸的液晶拼接大屏幕，每个显示区域都必须"垂直" 观看是不现实的。 因此， 在观看由 "反光"形式拼接成的液晶大屏幕， 在与"圆弧" 底边垂直以外的显示区域会出现比原来液晶屏 "更宽" 的黑格框， 显然： a) 限制了液晶显示屏的拼接数量和尺寸； b) 不能 "恢复显示"被黑边框 "替代"或 "占据" 的原视频图像； c) 限制了观看的方式。 光学放大平板 光学放大平板 i是基于光纤传导原理， 将光输入层 （底层） 的像素间距等距扩散至 光输出层 （顶层）， 使得底层与液晶屏 C像素一一对应， 顶层扩散至包含液晶黑边 框 a的外径尺寸 (见图 14)。 白色 为了避免黑边框的黑色对视觉的 "冲击"以及显示区域与黑色的反差， 将黑边框的 黑色改为 "白色"或 "银灰色"， 以平和这种 "冲击"， 但在原输入视频表达黑色 元素时， "白色"边框仍然产生视觉 "冲击" 。
1 .2.0 主动式 主动式是在无视频的黑边框宽度面上 "恢复显示"被黑格框 "替代"或 "占据"的 视频图像， 使得在液晶屏黑边框的宽度面上"恢复显示"的视频图像与液晶屏可显 示区域上显示的视频图像融合成一幅与原输入一样的视频图像。 这是一种边缘显 示， 而这种边缘显示中需要"恢复显示"的像素可以通过 LED 或者 OLED, 以及 相应的电路来实现， 它与其他形式 "遮盖"黑格框最本质的不同是： "恢复显示" 被黑格框 "替代"或 "占据" 的视频图像， （见图 15)。 除上述液晶屏外， 其他显示屏拼接后黑格框的情况如下： 2.0.0 背投 （DLP) 显示屏 背投采用背部投影的方式制作显示屏。 由于投影屏幕被固定在非常薄的框架端面 上， 使得背投无视频的黑边框 a窄一些 （单边 1 .5 mm， 拼接后双边 3 mm)， （见图 16)。 但无论这些黑边框多么窄， 背投在拼接后仍然有黑格框。 同时与液晶显示相比， 背 投是属于老一代的显示技术， 自身有很多限制与缺陷， 如亮度低、 分辨率低 （无法 做到高清、 超高清)、 寿命短、 维护成本高、 厚度大、 背后需维护空间等。
3.0.0 等离子 （PDP) 显示屏 等离子是一种 "自发光"像素显示技术， 因此可以把这些 "自发光"的像素制作在 显示屏的 "最"边缘上。 但这些 "自发光"像素仍然需要获得支撑， 因此支撑这些 "自发光"像素的结构厚度就是无视频的黑边框 （单边 1 .5 mm , 拼接后双边 3 mm)。 同时，等离子显示技术自身的限制与缺陷，如像素烧灼、分辨率低 （无法做到高清、 超高清)、 亮度低、 寿命短、 价格高、 耗电大等 （见图 17)。
4.0.0 LED 显示屏
LED显示屏非常普遍。但是 LED 显示屏一般做不到高清 （2K) 显示， 而要显示超 高清 （4K) 更难。 目前， LED 显示屏的像素点距 （Pitch)可以做到 1 .9 mm， 对于 数字高清标准 1920 x 1080， 只有当 LED 显示屏的尺寸达到 2052 x 3648 mm， 即 (1 .9 X 1920) X (1 .9 x 1080) 的时候， 才能够完全显示高清 （2K) 视频图像， 但 问题是： a) 高清视频在 2.0 x 3.6米上显示， 视频图像开始 "模糊" 了； b)在 2.0 x 3.6米这个 LED 显示屏中需要使用 200万颗三色 LED颗粒， 即每平 方米上有 27.7万颗独立的三色 LED, 这对价格、 功耗、 热量、 一致性、 可靠性、 寿命都是巨大的挑战。
5.0.0 OLED
OLED 是一种新型的显示技术， 但是目前仍处在实验阶段。 由 OLED 制作成几米 甚至十几米的大屏幕还有待时日。 综上所述， 带黑边框的液晶、 背投、 等离子都暂时无法真正实现 "无缝"拼接， 即当 它们拼接后都会产生黑格框。 发明内容 本发明的目的是解决现有技术中显示屏在拼接成大屏幕后都带有无视频的黑格框所存 在的上述问题， 提供一种边缘显示与液晶显示集成的方案， 而主动式的边缘显示与液晶显 示融合显示原输入视频图像， 并采用本发明的技术方案， 使得 "无缝"拼接成为可能。 主 动式是在液晶屏的黑边框宽度面上显示视频内容，这一视频内容原本被黑格框的宽度所"替 代"或 "占据"， 同时， 使得在液晶屏黑边框宽度面上显示的视频与液晶屏上显示的视频 融合成一幅与输入一样的视频图像， 构成一 "无缝"显示系统。 其中黑边框宽度面上的显 示视频由显示单元 LED/OLED 及其相应电路来实现。 本发明设计一种用边缘显示消除液晶显示屏拼接边框的装置， 其特征在于： 在液晶显 示屏拼接边框上设置边缘显示单元， 在边缘显示单元上设置匀光层作为边缘显示单元的显 示表面， 与液晶屏可显示区域合成显示原输入视频图像。 所述的液晶显示屏的边框为内层 框、 外层框的复合结构， 所述的匀光层为黑色、 透明、 薄壳的长条匀光体， 所述的边缘显 示单元为 LED 显示单元的柔性电路， 边缘显示单元上的匀光层的内侧底边与液晶显示屏 复合框的内层框连接， 在边缘显示单元上的匀光层的外侧侧面与液晶显示屏复合框的的外 层框连接。 边缘显示单元的 LED 显示单元的柔性电路从含背光的液晶面板正面引导到其 背面， 与相应的驱动、 控制电路相联接。 匀光层的内、 外侧边缘设有圆弧。 匀光层的内侧 底部按一定间距设置有针脚， 在液晶显示屏的边框的内层框上设有相同间隔的通孔， 匀光 层的针脚穿过内层框的通孔， 针脚与内层框热压接连接。 匀光层的内层顶部设置有卡位， 卡位定位了边缘显示单元的 LED与内层框的相对位置， 卡位设置在边缘显示单元的 LED 的发光椎体外部及其下部的 120° 夹角之外。 匀光层的外侧的侧面上设置有凹槽， 该凹槽 设置在边缘显示单元的 LED 的发光椎体外部及其下部的 120° 夹角之外。 内层框、 边缘 显示单元的 LED 柔性电路、外层框的厚度叠加后的最大外径尺寸小于匀光层的显示边界。 复合框的外层框与匀光层的外侧凹槽由扣接连接。 内层框、 边缘显示单元的 LED 柔性电 路、 外层框在含背光液晶面板安装位上设置有同位通孔， 内层框、 匀光层、 边缘显示单元 的 LED 柔性电路、 外层框由位于同位通孔内的固定栓在含背光的液晶面板上。 边缘显示 单元的 LED 柔性电路的背面贴紧在内层框上面， 使得 LED 得以散热以及可以向外传导。 边缘显示单元的 LED 柔性电路的导电区域由匀光层包裹， 使得边缘显示单元的 LED 柔性 电路处于绝缘状态。
本发明的优点是： 边缘显示是以面光源形式与液晶屏可显示区域的视频图像相融合， 这种将边缘显示中的 LED 点光源转化成面光源的技术方案， 使它很好地融入了液晶显示 的视频图像中； 允许大视角 75° (与液晶屏法线夹角)， 即 150° 范围观看拼接后的液晶屏 (更大视角观看将期待液晶屏本身在大视角下有更好的显示特性)； 在 80% 以上视频图像 中， 基本无法辨别边缘显示的存在 （剩余 20% 视频图像将期待拼接液晶屏之间有更好的 一致性)； 虽然边缘显示比液晶屏高出 2 毫米左右， 但在 2~3米外观看时， 这一高度差小 于 1/1000， 不会成为视觉障碍， 即基本分辨不出来， 而在这一高度上显示的边缘视频因为 "恢复显示"原来丢失的视频图像使拼接后的图像趋于完整； 正是采用这种将边缘显示集 成到液晶显示上的技术方案， 使得它成为一个无缝隙显示屏整体， 大大减低了运输、 使用 和拼接时的技术要求， 极大拓展了这种无缝显示屏的应用。
附图说明
图 1为带有黑边框的液晶拼接屏， 中间显示有 7 毫米左右的黑格框， 图 2为带有 4 个缺口与十字形的圆， 缺口、 十字形与黑格框一样宽， 图 3为 4 个缺口、 十字形及其与黑格框等宽的视频图像显示缺失， 图 4为输入视频图像 "全部"显示， 原视频图像 "分裂" 了， 图 5为典型液晶面板截面示意图， 图 6为液晶屏黑边框上的反光镜面， 图 7为液晶可显示区域边缘视频图像被反射后 "重复显示"，
图 8为带 "圆弧"透明平板与液晶屏贴合，
图 9为 "圆弧" 弓柱与液晶屏贴合， 图 10为 "垂直"于 "圆弧"底边观看， 液晶屏的黑格框比原来的窄， 图 1 1为与 "圆弧"底面法线成 30ο观看， 液晶屏的黑格框比原来的更宽， 图 12为与 "圆弧"底面法线成 45ο观看， 视角越大， 黑格框越宽，
图 13为与 "圆弧"底面法线成 60ο观看， 视角越大， 黑格框越宽，
图 14为光学放大平板，
图 15为采用本发明边缘显示与液晶显示集成技术方案示意图， 图 16为背投显示屏原理示意图，
图 17为等离子显示屏拼接后的黑格框，
图 18为本发明的基本原理图， 图 19为本发明的内层框、 匀光层、 显示单元与外层框组合结构示意图， 图 20为本发明的匀光层内、 外侧边缘圆弧结构示意图，
图 21为本发明的 LED 显示单元引脚绝缘结构示意图， 图 22为本发明的匀光层内侧底部的针脚的结构示意图，
图 23为本发明的将匀光层的针脚穿过内层框通孔并热压接连接的结构示意图， 图 24为本发明的匀光层的内层顶部的卡位结构示意图，
图 25为本发明的匀光层外侧侧面的凹槽及外层框与匀光层扣接的结构示意图， 图 26为本发明的外层框与匀光层扣接后小于匀光层的显示边界面示意图， 图 27为本发明的内层框、 匀光层、 LED 柔性电路、 外层框固定到液晶面板上， 柔性电路被引导到液晶面板背面的结构示意图，
图 28 为本发明的 LED边缘显示单元及其柔性电路更换维护的结构示意图。 下面结合实施例和附图对本发明作详细说明， 具体实施方式 一种用边缘显示消除液晶显示屏拼接边框的装置， 其特征在于： 在液晶显示屏拼接边 框上设置边缘显示单元， 在边缘显示单元上设置匀光层作为边缘显示单元的显示表面， 与 液晶屏可显示区域合成显示原输入视频图像。 所述的液晶显示屏的边框为内层框、 外层框 的复合结构，所述的匀光层为黑色、透明、薄壳的长条匀光体，所述的边缘显示单元为 LED 显示单元的柔性电路， 边缘显示单元上的匀光层的内侧底边与液晶显示屏复合框的内层框 连接， 在边缘显示单元上的匀光层的外侧侧面与液晶显示屏复合框的的外层框连接。 边缘 显示单元的 LED 显示单元的柔性电路从含背光的液晶面板正面引导到其背面， 与相应的 驱动、 控制电路相联接。 匀光层的内、 外侧边缘设有圆弧。 匀光层的内侧底部按一定间距 设置有针脚， 在液晶显示屏的边框的内层框上设有相同间隔的通孔， 匀光层的针脚穿过内 层框的通孔， 针脚与内层框热压接连接。 匀光层的内层顶部设置有卡位， 卡位定位了边缘 显示单元的 LED 与内层框的相对位置， 卡位设置在边缘显示单元的 LED的发光椎体外部 及其下部的 120° 夹角之外。 匀光层的外侧的侧面上设置有凹槽， 该凹槽设置在边缘显示 单元的 LED 的发光椎体外部及其下部的 120°夹角之外。 内层框、 边缘显示单元的 LED 柔性电路、 外层框的厚度叠加后的最大外径尺寸小于匀光层的显示边界。 复合框的外层框 与匀光层的外侧凹槽由扣接连接。 内层框、 边缘显示单元的 LED 柔性电路、 外层框在含 背光液晶面板安装位上设置有同位通孔， 内层框、 匀光层、 边缘显示单元的 LED 柔性电 路、 外层框由位于同位通孔内的固定栓在含背光的液晶面板上。 边缘显示单元的 LED 柔 性电路的背面贴紧在内层框上面， 使得 LED 得以散热以及可以向外传导。 边缘显示单元 的 LED 柔性电路的导电区域由匀光层包裹， 使得边缘显示单元的 LED 柔性电路处于绝 缘状态。
本发明提出一种如何将边缘显示集成到尺寸为 2~4 毫米左右的液晶屏黑边框的宽度 面上， 其特征在于： 在液晶屏原有黑边框的宽度面上增加边缘显示后不增加新的黑边框， 或不产生新的无视频区域，即在液晶屏原有黑边框的宽度面上增加边缘显示后所构成的"整 体" 的最大外径尺寸投影平面内的任何部分、 以及液晶显示平面的半球视角各个方向上， 不存在无视频区域的显示系统， 或其 "整体" 自身是一个 "无缝"显示系统； 以及这一方 案还使边缘显示具备下列特征： 把边缘显示准确地定位到含背光液晶面板上， 使得边缘显 示的像素与液晶显示的像素相对应， 从而使边缘显示与液晶显示能融合显示并合成原输入 视频图像； 并且把边缘显示与含背光液晶面板集成为一个 "整体" ， 它是被整体运输、 安 装和拼接的； 同时它与带有黑边框的液晶屏在操作、 使用上没有实质性的不同 （除显示效 果外)， 而不是将带有黑边框的液晶屏拼接完成后， 再在拼接大屏幕上通过贴合另外的元器 件来实现的； 并且使得边缘显示同样具有原黑边框在含背光液晶面板上保持液晶玻璃的特 性， 并具有同等的强度， 刚度和安全度 （液晶玻璃不会因此而破损)； 并且在输入视频需要 表现黑色图像元素时， 在边缘显示的相应位置上能体现这种黑色元素； 并且使得边缘显示 中的电路是充分绝缘的； 并且使得边缘显示的像素显示单元的 LED 得以散热以及可以向 外传导； 并且使得边缘显示中的 LED 柔性电路从含背光液晶面板的正面被引导到其背面， 与相应的驱动、 控制电路相联接； 并且使得边缘显示中像素显示单元的 LED 及其柔性电 路具有可更换性、 可维护性。
用植入在柔性线路上的 LED 作为边缘显示中的像素显示单元。 这种植入方式可以是 三基色封装 LED 颗粒焊接在柔性线路上， 也可以将 LED 三基色芯片直接绑定并封装到 线路板上 （COB, Chip on Board), 取决于设计 LED 像素的密度。 如果将封装 LED 颗粒 焊接在柔性线路上， 边缘显示像素点距可以达到 1 ~ 1 .5 毫米； 如果使用 COB， 其显示 像素点距可以小于 1 毫米，与拼接用的液晶屏的像素点距非常接近。即使是对于封装 LED 颗粒 1 ~ 1 .5 毫米的像素点距， 当液晶屏拼成 2 x 2后， 其实际显示像素已与液晶屏像素 显示效果基本一致 （拼接液晶像素点距一般为 0.7 毫米左右)。
本文所指的封装形式或 COB 形式的 LED , 以及所指的 OLED 统称为显示单元 LED。 同时， 等离子 （PDP) 与液晶屏一样有黑边框， 本发明的技术方案同样可以在等离子 (PDP) 上实施， 本文所指的在液晶屏上实施本发明也包括在等离子 （PDP) 上实施， 统称 为液晶屏。
本发明提出一种技术方案来构建边缘显示，使其具备上述特征：边缘显示由内层框 1、 匀光层 2、外层框 3组成， 它可以将显示单元 LED及其柔性电路 4置于其中， 如图 18、 图 19所示； 匀光层覆盖在显示单元的 LED 上， 匀光层的内、 外侧边缘设有圆弧 5， 使得 LED 显示像素在匀光层显示表面等亮， 如图 20 的所示； 匀光层由黑色、 透明、 薄壳、 长 条匀光体构成， 使得在原输入视频需要表达黑色元素时体现黑色； 匀光层由绝缘材料构成， 并且包裹住显示单元 LED 电路裸露部分， 使得 LED 弓 |脚 （及焊点） 6 绝缘， 如图 21 的 所示； 匀光层的内侧底部按一定间距制有针脚 7， 如图 22 所示， 复合框的内层框上制有 相同间隔的通孔，将匀光层的针脚穿过内层框的通孔，并用热压接 8 方式连接，如图 23 的 所示， 使得内层框完全置于匀光层的显示界面之内， 并定位了匀光层与内层框的相对位置; 匀光层的内层顶部制有一系列卡位 9， 这些卡位沿 LED 阵列方向按适当密度分布， 并设 置在 LED 120° 发光椎体外部及其下部， 定位了显示单元 LED 与匀光层， 以及 LED 与 内层框之间的相对位置， 如图 24 的所示； 匀光层的外侧侧面制有凹槽 10， 该凹槽设置 在 LED 120° 发光椎体外部及其下部， 不会遮挡 LED 像素的显示， 如图 25 的所示； 将 复合框的外层框与匀光层的凹槽进行扣接 1 1， 如图 25 的所示； 复合框的外层框与匀光 层的外侧凹槽扣接后， 其最大外径尺寸小于匀光层所界定的显示外缘尺寸 12， 使得拼接后 屏体之间的匀光层边缘与边缘是充分啮合的， 如图 26所示； 内层框、 LED 柔性电路、 外 层框在液晶面板的安装位上制有同位通孔， 使得内层框、 匀光层、 LED 柔性电路、 外层框 通过固定栓 13 固定到液晶面板 17 上， 定位了显示单元 LED 像素与液晶屏显示像素的 位置对应关系， 如图 27 的所示， 并使得匀光层显示面及 LED 显示面分别平行与液晶显 示面； 作为边缘显示的匀光层完全覆盖了液晶屏原来黑边框的宽度； 具有液晶面板 17 上 保持液晶玻璃的特性； 内层框与匀光层压接、外层框与匀光层扣接后，将显示单元 LED 的 柔性电路 14 从液晶面板 17 的正面引导到其背面，与相应的驱动、控制电路 16相连接， 如图 27 的所示； 显示单元 LED 通过匀光层的卡位 "压"在内层框上面， 使得 LED 可 以通过内层框将主要热量传导出来 （注： LED 主要靠其背部导热)， 并使得所有 LED 显示 面与匀光层显示表面等高、 等亮； 复合框的外层框采用扣接方式使得外层框可以被拆卸， 显示单元 LED 及其柔性电路可更换， 可维护， 如图 28 的 15 部分所示。

Claims

权 利 要 求 书
1、 一种用边缘显示消除液晶显示屏拼接边框的装置， 其特征在于： 在液晶显示屏拼接 边框上设置边缘显示单元， 在边缘显示单元上设置匀光层作为边缘显示单元的显示表 面， 与液晶屏可显示区域合成显示原输入视频图像。
、按权利要求 1所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 所述的液晶显示屏的边框为内层框、外层框的复合结构， 所述的匀光层为黑色、透明、 薄壳的长条匀光体， 所述的边缘显示单元为 LED 显示单元的柔性电路， 匀光层的内 侧底边与内层框连接， 匀光层的外侧侧边与外层框连接。
、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 边缘显示单元的 LED 显示单元的柔性电路从含背光的液晶面板正面引导到其背面， 与相应的驱动、 控制电路相联接。
、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 匀光层的内、 外侧边缘设有圆弧。
5、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 匀光层的内侧底部按一定间距设置有针脚， 在液晶显示屏的边框的内层框上设有相同 间隔的通孔， 匀光层的针脚穿过内层框的通孔， 针脚与内层框热压接连接。
、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 匀光层的内层顶部设置有卡位， 卡位定位了边缘显示单元的 LED 与内层框的相对位 置， 卡位设置在边缘显示单元的 LED 的发光椎体外部及其下部的 120° 夹角之外。 、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 匀光层的外侧的侧面上设置有凹槽， 该凹槽设置在边缘显示单元的 LED 的发光椎体 外部及其下部的 120° 夹角之外。
、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 内层框、 边缘显示单元的 LED 柔性电路、 外层框的厚度叠加后的最大外径尺寸小于 匀光层的显示边界。
、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 复合框的外层框与匀光层的外侧凹槽由扣接连接。
10、按权利要求 2所述的一种用边缘显示消除液晶显示屏拼接边框的装置，其特征在于: 内层框、 边缘显示单元的 LED 柔性电路、 外层框在含背光液晶面板安装位上设置有 同位通孔， 内层框、 匀光层、 边缘显示单元的 LED 柔性电路、 外层框由位于同位通 孔内的固定栓在含背光的液晶面板上。
1 1、 按权利要求 10所述的一种用边缘显示消除液晶显示屏拼接边框的装置， 其特征在 于： 边缘显示单元的 LED 柔性电路的背面贴紧在内层框上面。
12、 按权利要求 10所述的一种用边缘显示消除液晶显示屏拼接边框的装置， 其特征在 于： 边缘显示单元的 LED 柔性电路的导电区域由匀光层包裹， 使得边缘显示单元的 LED 柔性电路处于绝缘状态。
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