WO2018205484A1 - 直下式背光显示模组及显示设备 - Google Patents

直下式背光显示模组及显示设备 Download PDF

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Publication number
WO2018205484A1
WO2018205484A1 PCT/CN2017/103433 CN2017103433W WO2018205484A1 WO 2018205484 A1 WO2018205484 A1 WO 2018205484A1 CN 2017103433 W CN2017103433 W CN 2017103433W WO 2018205484 A1 WO2018205484 A1 WO 2018205484A1
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WIPO (PCT)
Prior art keywords
electromagnetic
film
liquid crystal
direct
disposed
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PCT/CN2017/103433
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English (en)
French (fr)
Inventor
侯旻翔
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Application filed by 广州视源电子科技股份有限公司, 广州视睿电子科技有限公司 filed Critical 广州视源电子科技股份有限公司
Priority to JP2020511847A priority Critical patent/JP6858307B2/ja
Priority to ES17909202T priority patent/ES2914789T3/es
Priority to EP17909202.8A priority patent/EP3462234B1/en
Publication of WO2018205484A1 publication Critical patent/WO2018205484A1/zh

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    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection

Definitions

  • the present invention relates to the field of display device technologies, and in particular, to a direct type backlight display module and a display device.
  • the liquid crystal display has become a mainstream display in the market due to its low electromagnetic radiation, low power consumption, low heat generation, light weight and the like, and the LED backlight display has also been widely used.
  • the LED backlight display on the market is mainly divided into a side-entry type and a direct-down type according to the light entrance mode.
  • the side-entry type is to install the LED light string as the backlight module around the liquid crystal screen
  • the direct-type type is to install the LED light string as the backlight module on the front and back of the liquid crystal screen
  • the direct-lit backlight display is relatively straight. Lower cost and wider application.
  • the direct type backlit display can only be used as a display and has a single function.
  • the combination of commonly used liquid crystal displays and touch devices is a market development trend.
  • the market demand for touch input is also getting higher and higher, such as the pursuit of the original handwriting input effect, so the electromagnetic screen technology has been widely used.
  • the electromagnetic screen technology usually requires the electromagnetic board to be mounted on the liquid crystal screen.
  • the electromagnetic board is not affected by the light source when it is mounted on the liquid crystal screen.
  • the present invention provides a direct-lit backlight display module and a display device, which can integrally integrate an electromagnetic touch input into a direct-lit backlight display module, and can also ensure a liquid crystal display device. Have a good display.
  • a direct-lit backlight display module includes a backlight module and a liquid crystal panel corresponding to each other, and a main control circuit connected to the backlight module and the liquid crystal panel;
  • the backlight module includes a back plate, a light emitting structure disposed on the back plate, a diffusing plate facing the light emitting structure, and an electromagnetic input module disposed between the light emitting structure and the liquid crystal panel;
  • the electromagnetic input module includes an electromagnetic diaphragm disposed between the light emitting structure and the liquid crystal panel, and an electromagnetic control circuit electrically connected to the electromagnetic diaphragm, wherein the electromagnetic diaphragm has a light transmittance greater than or equal to 50 %, the electromagnetic diaphragm is connected to the main control circuit through the electromagnetic control circuit.
  • the electromagnetic film is disposed between the light emitting structure and the diffusion plate.
  • a distance between the electromagnetic film and the light emitting structure is greater than or equal to 10 cm.
  • a silicon steel sheet is disposed between the electromagnetic film and the light emitting structure.
  • the electromagnetic film is disposed in the diffusion plate.
  • the shape and area of the electromagnetic film and the diffusion plate are the same, and an edge of the electromagnetic film is aligned with an edge of the diffusion plate;
  • the area of the electromagnetic film is smaller than the area of the diffusion plate, and the electromagnetic film is located somewhere on the circumferential side of the diffusion plate.
  • the method further includes a touch input module disposed on the liquid crystal panel, the touch input module includes a touch input board disposed on the liquid crystal panel, and a touch control circuit connected to the touch input board, The touch control circuit is connected to the main control circuit.
  • a middle frame structure is further included, and the diffusion plate, the optical film assembly, the electromagnetic film, and the liquid crystal panel are all fixed in the middle frame structure.
  • the optical film assembly includes a reflective film, a brightness enhancement film, and a diffusion film which are sequentially stacked, the reflective film corresponding to the diffusion plate, and the diffusion film corresponding to the liquid crystal panel;
  • the light-increasing film includes a prism film, a microlens, and a reflective polarizer which are sequentially disposed, the prism film corresponding to the reflective film, and the reflective polarizer corresponds to the diffusion film.
  • the light emitting structure includes a direct type light bar disposed on the back plate and facing the diffusion plate, and a reflection sheet surrounding the bottom side and the circumference side of the direct type light bar, The reflection sheet corresponds to the diffusion plate.
  • the present invention also provides a display device including the direct type backlight display module as described above.
  • the invention has the following beneficial effects: by combining the electromagnetic input technology and the direct-type backlight display module, the electromagnetic input and the backlight display are integrated in the direct-lit backlight mode at a low cost, and the direct-lit backlight display module is realized.
  • the multi-functionality moreover, not only can realize the liquid crystal display function, but also realize the touch and analog track, and can also simulate the real handwriting writing, and has a good user experience.
  • FIG. 1 is a schematic diagram showing the structure of a direct type backlight display device according to the present invention.
  • FIG. 2 is a schematic block diagram showing the structure of a direct type backlight display device according to the present invention (when the electromagnetic film is disposed between the diffusion plate and the liquid crystal panel);
  • FIG 3 is a schematic block diagram showing the structure of a direct type backlight display device according to the present invention (when the electromagnetic film is disposed between the light emitting structure and the diffusion plate);
  • FIG. 4 is a schematic block diagram showing the structure of a direct type backlight display device (when the electromagnetic film is disposed in the diffusion plate) according to the present invention.
  • an embodiment of the present invention provides a direct-lit backlight display module, including a backlight module 100 and a liquid crystal panel 300 corresponding to each other, and a main control circuit connected to the backlight module 100 and the liquid crystal panel 300. .
  • a main control circuit connected to the backlight module 100 and the liquid crystal panel 300, The backlight module 100 and the liquid crystal panel 300 can be controlled to facilitate liquid crystal display or other functions.
  • the backlight module 100 includes a back plate 110, a light emitting structure disposed on the back plate 110, and a diffusing plate 140 facing the light emitting structure, and The electromagnetic input module 200 between the light emitting structure and the liquid crystal panel 300.
  • the backplane 110 provides a mounting base for the entire backlight module 100, and the light emitting structure emits light to illuminate the liquid crystal panel 300.
  • electromagnetic input can be realized on the direct type backlight display module.
  • the electromagnetic input technology can be combined with the direct-lit backlight display module, and the electromagnetic input and the backlight display can be integrated in the direct-lit backlight mode at a low cost, and the multi-function of the direct-lit backlight display module can be realized.
  • the direct-lit backlight display module can not only realize the liquid crystal display function, but also realize the touch and analog track, and can also simulate the real handwriting writing, and has a good user experience.
  • the light emitting structure includes a direct-type light bar 120 disposed on the back plate 110 and facing the diffusing plate 140, and a reflective sheet surrounding the bottom side and the circumferential side of the direct-lighting light bar 120. 130.
  • the reflection sheet 130 corresponds to the diffusion plate 140.
  • the direct-lit light bar 120 emits light to the diffusing plate 140, and the diffusing plate 140 can change the beam angle of the light. After the light passes through the diffusing plate 140, the beam angle becomes 160-170 degrees.
  • the diffusion plate 140 can also atomize the image to improve the uniformity of the image.
  • the diffuser plate 140 also has a certain rigidity to facilitate supporting the optical film assembly 150.
  • the reflective sheet 130 can reflect a portion of the exposed light, and reflect the light to the diffusing plate 140 to allow the light to be used twice, thereby improving the utilization efficiency of the light and improving the brightness.
  • the reflection sheet 130 is semi-enclosed on one side of the direct-type light bar 120, and the light emitted by the direct-type light bar 120 can be sufficiently reflected to better improve the light utilization efficiency.
  • the optical film assembly 150 includes a reflective film, a brightness enhancement film, and a diffusion film which are sequentially stacked, and the reflective film corresponds to the diffusion plate 140, and the diffusion film corresponds to the electromagnetic input module 200.
  • the optical patch assembly 150 can further process the light for better light effects. The light is reflected multiple times by the reflective film to further improve light utilization efficiency and enhance brightness.
  • the brightness of the light can be further enhanced by the brightness enhancement film to enhance the display intensity effect.
  • the diffusing sheet can further atomize the image, enhance the viewing angle, and enhance the brightness.
  • the brightness enhancement film comprises a prism film or a microlens or a reflective polarizer. The prism film, the microlens and the reflective polarizer are further processed to further enhance the brightness and ensure the viewing angle.
  • the electromagnetic input module 200 includes an electromagnetic diaphragm 210 disposed between the light emitting structure and the liquid crystal panel 300, and an electromagnetic control circuit electrically connected to the electromagnetic diaphragm 210, and the electromagnetic diaphragm is transparent.
  • the optical film 210 is connected to the main control circuit 400 through the electromagnetic control circuit.
  • the light rate is greater than or equal to 50%.
  • the electromagnetic input module 200 further includes an electromagnetic pen that cooperates with the electromagnetic diaphragm 210.
  • the electromagnetic pen 210 can be input on the liquid crystal panel 300, and the electromagnetic plate 210 disposed on the liquid crystal panel 300 can sense the writing of the electromagnetic pen, thereby transmitting a precise handwriting mode and simulating the real use. The pen diameter effect of the pen is written to obtain a good original handwriting input experience.
  • the electromagnetic diaphragm 210 can be controlled by the electromagnetic control circuit, and the electromagnetic input function can be conveniently turned on, off, and adjusted.
  • the electromagnetic film 200 may be disposed between the diffusion plate 140 and the liquid crystal panel 300.
  • the electromagnetic diaphragm 210 may be disposed between any two of the reflective film, the brightness enhancement film, and the diffusion film. That is, the electromagnetic film 210 may be disposed between the reflective film and the brightness enhancement film, or may be disposed between the brightness enhancement film and the diffusion film.
  • the electromagnetic film 210 may be disposed between any two of the prism film, the microlens, and the reflective polarizer. That is, the electromagnetic film 210 may be disposed between the prism film and the microlens, or may be disposed between the microlens and the reflective polarizer.
  • the electromagnetic film 210 may be disposed between the prism film and the reflective film, or the electromagnetic film 210 may be disposed between the reflective polarizer and the diffusion film. In addition, in other embodiments, the electromagnetic film 210 may be disposed between the reflective film and the diffusion plate 140 or between the diffusion film and the liquid crystal panel 300. When the electromagnetic diaphragm 210 is disposed at these positions, a good electromagnetic input effect can be achieved. It does not affect the display function of the LCD panel.
  • the shape and area of the electromagnetic film 210, the liquid crystal panel 300, and the optical film assembly 150 are the same, and the edge of the electromagnetic film 210 and the liquid crystal panel 300 and the optical film are the same.
  • the edges of assembly 150 are aligned. That is, the electromagnetic film 210 is completely aligned with the liquid crystal panel 300 and the optical film assembly 150, and the electromagnetic film 210 completely covers the corresponding position of the liquid crystal panel 300, so that the entire liquid crystal panel 300 is The corresponding position can obtain electromagnetic input effects.
  • the area of the electromagnetic film 210 is smaller than the area of the liquid crystal panel 300 or the optical film assembly 150, and the electromagnetic film 210 is located in the liquid crystal panel 300 or the optical film.
  • the electromagnetic film 210 is not completely aligned with the liquid crystal panel 300 and the optical film assembly 150, but only corresponds to a certain portion of the liquid crystal panel 300, and only the corresponding portion has an electromagnetic input effect, which satisfies Different use needs.
  • the electromagnetic film 200 may also be disposed between the light emitting structure and the diffusion plate 140. That is, the electromagnetic film sheet 200 may be kept at a certain distance from the diffusion plate 140, and the electromagnetic film sheet 200 may be attached to the diffusion plate 140.
  • the electromagnetic film 200 is disposed between the light emitting structure and the diffusion plate 140, an electromagnetic input function can also be realized.
  • the distance between the electromagnetic film 200 and the light emitting structure is 10 cm or more. Specifically, the distance between the electromagnetic diaphragm 200 and the direct-lit light bar 120 is greater than or equal to 10 cm.
  • the electromagnetic coil 200 is provided with an electromagnetic coil, and a eddy current is generated in the electromagnetic coil, if the distance between the direct-type light bar 120 and the electromagnetic diaphragm is less than 10 cm, the eddy current in the electromagnetic coil is affected. Thus, the normal operation of the electromagnetic diaphragm 200 is affected.
  • a silicon steel sheet may be disposed between the electromagnetic diaphragm 200 and the direct-type light bar 120, and the influence of the direct-type light bar 120 on the electromagnetic film 200 may be isolated.
  • the shape and area of the electromagnetic diaphragm 210 and the diffuser plate 140 are the same, and the edge of the electromagnetic diaphragm 210 is aligned with the edge of the diffuser plate 140. That is, the electromagnetic diaphragm 210 is completely aligned with the diffusion plate 140, and the electromagnetic diaphragm 210 completely covers the diffusion plate 140, so that electromagnetic input effects can be obtained at positions corresponding to the entire diffusion plate 140. .
  • the area of the electromagnetic diaphragm 210 is smaller than the diffusion The area of the plate 140, and the electromagnetic film 210 is located somewhere on the circumferential side of the diffusion plate 140. That is, the electromagnetic diaphragm 210 is not completely aligned with the diffusion plate 140, but only at a certain portion of the diffusion plate 140, and only the corresponding portion has an electromagnetic input effect to meet different use requirements.
  • the electromagnetic film 200 can also be directly disposed in the diffusion plate 140, and the electromagnetic input function can also be realized.
  • the direct-lit backlight display module further includes a touch input module disposed on the liquid crystal panel 300, and the touch input module includes a touch input board disposed on the air panel 300 (air side). And a touch control circuit coupled to the touch input pad, the touch control circuit being coupled to the main control circuit.
  • the touch input circuit can be controlled by a touch control circuit to control the opening, closing and adjusting of the touch input function, so that the direct type backlight display module has a common touch input function.
  • the touch input panel of the touch input module also has good light transmittance, and does not affect the display effect of the direct type backlight display module.
  • the conventional touch input module does not need to react to the pressure of the input, and can be operated by both the hand and the special pen.
  • the electromagnetic input module can sense the weight of the input pressure, can simulate real writing notes, but requires a dedicated electromagnetic pen to play its professionalism.
  • the touch input module may be disposed on both sides of the liquid crystal panel 300 simultaneously with the electromagnetic input module, or may be separately disposed on the air side surface of the liquid crystal panel 300. In this way, it is possible to meet different usage requirements at the same time.
  • the touch input module can be configured as a capacitive input module or an infrared input module.
  • the capacitive input module includes a capacitive input board disposed on the air panel 300 (air side), and is connected to the capacitive input board. a capacitance control circuit, the capacitance control circuit being connected to the main control circuit.
  • the touch input module is configured as an infrared input module
  • the infrared input module includes an infrared sensor board disposed on the air panel 300 (air side), and is connected to the infrared sensor board.
  • the infrared control circuit is connected to the main control circuit.
  • the direct type backlight display module further includes a tempered glass 310 disposed on a surface of the touch input board.
  • the touch panel and the liquid crystal panel 300 can be provided by using the tempered glass 310 For protection.
  • the tempered glass 310 may be directly disposed on the air side surface of the liquid crystal panel 300 to directly protect the liquid crystal panel 300.
  • the direct type backlight display module further includes a middle frame structure, and the diffusion plate, the optical film assembly, the electromagnetic film, and the liquid crystal panel are all fixed in the middle frame structure.
  • the middle frame structure the mounting base and the protective casing can be provided for the diffusion plate 140, the optical film assembly 150, the electromagnetic diaphragm 210, and the liquid crystal panel 300, so that the structure is more firm and reliable.
  • the main control circuit, the electromagnetic control circuit and the touch control circuit may also be disposed on the middle frame structure.
  • the present invention also provides a display device including the direct type backlight display module as described above.
  • the direct-type backlight display module and the display device provided by the invention integrate the electromagnetic input technology and the direct-type backlight display module, and realize the integration of the electromagnetic input and the backlight display in the direct-lit backlight mode at a low cost. It realizes the multi-functionality of the direct-lit backlight display module; moreover, it can not only realize the liquid crystal display function, but also realize the touch and analog track, and can also simulate the real handwriting writing, and has a good user experience.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Electromagnetism (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种直下式背光显示模组及显示设备。该一种直下式背光显示模组，包括相互对应的背光模组（100）和液晶面板（300），以及与背光模组（100）和液晶面板连接的主控电路（400）；背光模组（100）包括背板（110），设置于背板（110）上的发光结构，与发光结构正对的扩散板（140），以及设置于发光结构与液晶面板（300）之间的电磁输入模组（200）；电磁输入模组（200）包括设置于发光结构与液晶面板（300）之间的电磁膜片（210），以及与电磁膜片（210）电连接的电磁控制电路，电磁膜片（210）的透光率大于或等于50％，电磁膜片（210）通过电磁控制电路与主控电路（400）连接。本技术方案，可将电磁触控输入一体化地融合到直下式背光显示模组中，还能保证液晶屏具有良好的显示效果。

Description

直下式背光显示模组及显示设备 技术领域
本发明涉及显示设备技术领域，特别是涉及一种直下式背光显示模组及显示设备。
背景技术
传统技术中，液晶显示器由于具有电磁辐射低、功耗低、发热量少、轻薄等特点，已经成为市面的主流显示器，LED背光显示器也获得广泛的应用。而目前市场上的LED背光显示器根据入光方式，主要分为侧入式与直下式两种。其中，侧入式是将作为背光模组的LED灯串安装在液晶屏的四周，而直下式是将作为背光模组的LED灯串安装在液晶屏的正背面，相对来说直下式背光显示器成本较低应用更广泛。
但是，在传统技术中，直下式背光显示器仅仅只能用作显示器，功能单一。而随着输入技术和显示技术的发展，将常用的液晶显示器和触控装置相结合是市场的发展趋势。而且，市场对触控输入的体验要求也越来越高，如越来越追求原笔迹手写输入效果，因此电磁屏技术得到了广泛应用。但是，采用电磁屏技术通常需要将电磁板安装于液晶屏上，对于侧入式的LED背光显示器，因为其光源设置于液晶屏的四周，将电磁板安装于液晶屏上时并不会影响光源对液晶屏的作用效果；但是，对于直下式的LED背光显示器，因为其光源设置于液晶屏的正背面，将电磁板安装于液晶屏上时，会严重影响光源对液晶屏的作用效果。
发明内容
基于此，针对上述问题，本发明提供一种直下式背光显示模组及显示设备，可将电磁触控输入一体化地融合到直下式背光显示模组中，还能保证液晶屏具 有良好的的显示效果。
其技术方案如下：
一种直下式背光显示模组，包括相互对应的背光模组和液晶面板，以及与所述背光模组和液晶面板连接的主控电路；
所述背光模组包括背板，设置于所述背板上的发光结构，与所述发光结构正对的扩散板，以及设置于所述发光结构与液晶面板之间的电磁输入模组；
所述电磁输入模组包括设置于所述发光结构与液晶面板之间的电磁膜片，以及与所述电磁膜片电连接的电磁控制电路，所述电磁膜片的透光率大于或等于50％，所述电磁膜片通过所述电磁控制电路与所述主控电路连接。
下面对其进一步技术方案进行说明：
进一步地，所述电磁膜片设置于所述发光结构和扩散板之间。
进一步地，所述电磁膜片与所述发光结构之间的距离大于等于10cm。
进一步地，所述电磁膜片与所述发光结构之间设置有矽钢片。
进一步地，所述电磁膜片设置于所述扩散板中。
进一步地，所述电磁膜片与扩散板的形状和面积均相同，且所述电磁膜片的边缘与所述扩散板的边缘对齐；
或者，所述电磁膜片的面积小于所述扩散板的面积，且所述电磁膜片位于所述扩散板的周侧某处。
进一步地，还包括设置于所述液晶面板上的触摸输入模组，所述触摸输入模组包括设置于所述液晶面板上的触摸输入板，以及与所述触摸输入板连接的触摸控制电路，所述触摸控制电路与所述主控电路连接。
进一步地，还包括中框结构，所述扩散板、光学膜片组件、电磁膜片及液晶面板均固定于所述中框结构中。
进一步地，所述光学膜片组件包括依次叠设的反射膜、增光膜及扩散膜，所述反射膜与所述扩散板对应，所述扩散膜与所述液晶面板对应；
所述增光膜包括依次设置的棱镜膜、微透镜及反射偏光片，所述棱镜膜与所述反射膜对应，所述反射偏光片与所述扩散膜对应。
进一步地，所述发光结构包括设置于所述背板上并与所述扩散板正对的直下式灯条，以及围设于所述直下式灯条底侧和周侧的反射片，所述反射片与所述扩散板对应。
此外，本发明还提出一种显示设备，包括如上所述的直下式背光显示模组。
本发明具有如下有益效果：通过将电磁输入技术与直下式背光显示模组相互结合，以较低的成本在直下式背光模式下实现电磁输入和背光显示的一体化，实现直下式背光显示模组的多功能化；而且，不仅能够实现液晶显示功能，还能实现触控和模拟轨迹，还能模拟真实笔迹书写，具有良好的用户体验效果。
附图说明
图1为本发明所述直下式背光显示设备的结构示意简图；
图2为本发明所述直下式背光显示设备(所述电磁膜片设置于所述扩散板和液晶面板之间时)的结构示意框图；
图3为本发明所述直下式背光显示设备(所述电磁膜片设置于所述发光结构和扩散板之间时)的结构示意框图；
图4为本发明所述直下式背光显示设备(所述电磁膜片设置于所述扩散板中时)的结构示意框图。
附图标记说明：
100-背光模组，110-背板，120-直下式灯条，130-反射片，140-扩散板，150-光学膜片组件，200-电磁输入模组，210-电磁膜片，300-液晶面板，310-钢化玻璃，400-主控电路。
具体实施方式
下面结合附图对本发明的实施例进行详细说明。
如图1所示，本发明实施例提出一种直下式背光显示模组，包括相互对应的背光模组100和液晶面板300，以及与所述背光模组100和液晶面板300连接的主控电路。通过设置与所述背光模组100和液晶面板300连接的主控电路， 可以对所述背光模组100和液晶面板300进行控制，便于实现液晶显示或其他功能。
而且，如图2至图4所示，所述背光模组100包括背板110，设置于所述背板110上的发光结构，以及与所述发光结构正对的扩散板140，以及设置于所述发光结构与液晶面板300之间的电磁输入模组200。所述背板110为整个所述背光模组100提供安装基础，所述发光结构会发出光线照射所述液晶面板300。而且，通过在所述背光模组100和液晶面板300之间设置电磁输入模组200，可以在直下式背光显示模组上实现电磁输入。这样，就能够将电磁输入技术与直下式背光显示模组相结合，以较低的成本在直下式背光模式下实现电磁输入和背光显示的一体化，实现直下式背光显示模组的多功能化。而且，这种直下式背光显示模组不仅能够实现液晶显示功能，还能实现触控和模拟轨迹，还能模拟真实笔迹书写，具有良好的用户体验效果。
此外，所述发光结构包括设置于所述背板110上并与所述扩散板140正对的直下式灯条120，以及围设于所述直下式灯条120底侧和周侧的反射片130，所述反射片130与所述扩散板140对应。所述直下式灯条120向所述扩散板140发出光线，而所述扩散板140可以改变光线的光束角度，光线经过所述扩散板140后光束角度会变为160-170度。而且，所述扩散板140还可以雾化画面，提升画面均匀性。此外，所述扩散板140还具有一定的刚性，便于支撑所述光学膜片组件150。此外，所述反射片130可以对部分外露光线进行反射，反射光线到所述扩散板140，让光线得到二次利用，从而提升光的利用效率，提升亮度。而且，将所述反射片130半包围式设置于所述直下式灯条120的一侧，可以对所述直下式灯条120发出的光线进行充分的反射，更好地提高光线利用率。
此外，所述光学膜片组件150包括依次叠设的反射膜、增光膜及扩散膜，所述反射膜与所述扩散板140对应，所述扩散膜与所述电磁输入模组200对应。所述光学膜片组件150可以对光线进行进一步的处理，获得更好的光线效果。利用所述反射膜对光线进行多次反射，进一步提升光的利用效率并提升亮度。 此外，利用所述增光膜对光线亮度可以进一步地增强，提升显示强度效果。此外，利用所述扩散片可以进一步地雾化画面，提升可视角，还可提升亮度。而且，所述增光膜包括棱镜膜或微透镜或反射偏光片。利用所述棱镜膜、微透镜及反射偏光片对光线进行进一步的处理，以进一步提升亮度并保证视角。
此外，所述电磁输入模组200包括设置于所述发光结构与液晶面板300之间的电磁膜片210，以及与所述电磁膜片210电连接的电磁控制电路，所述电磁膜片的透光率大于或等于50％，所述电磁膜片210通过所述电磁控制电路与所述主控电路400连接。此外，所述电磁输入模组200还包括与所述电磁膜片210配合的电磁笔。通过设置透明的所述电磁膜片210，在使得所述直下式背光显示模组获得电磁输入能力的同时，还能保证所述液晶面板具有良好的透光度，使显示画质与亮度不受所述电磁膜片210的影响，具备精准的触控的同时，更是保证了屏幕最佳影像性能与显示效果。通过所述电磁笔可以在所述液晶面板300上输入，设置于所述液晶面板300上的所述电磁板210可以对电磁笔的书写产生感应，从而能够传递精准的手写模式，模拟出真实用笔书写时笔径粗细效果，获取良好的原笔迹输入体验。而且，利用所述电磁控制电路可以对所述电磁膜片210进行控制，可以方便地开启、关闭及调节电磁输入功能。
而且，在一些实施例中，如图2所示，所述电磁膜片200可设置于所述扩散板140和液晶面板300之间。而且，进一步地，在一些实施例中，所述电磁膜片210可设置于所述反射膜、增光膜及扩散膜中的任意两个之间。即所述电磁膜片210可设置于所述反射膜和增光膜之间，也可设置于所述增光膜和扩散膜之间。更进一步地，所述电磁膜片210可设置于所述棱镜膜、微透镜及反射偏光片中的任意两个之间。即所述电磁膜片210可设置于所述棱镜膜和微透镜之间，也可设置于所述微透镜和反射偏光片之间。或者所述电磁膜片210还可以设置于所述棱镜膜和反射膜之间，或者所述电磁膜片210还可以设置于所述反射偏光片和扩散膜之间。此外，在另一些实施例中，所述电磁膜片210还可设置于所述反射膜和扩散板140之间，或者设置于所述扩散膜和液晶面板300之间。所述电磁膜片210设置于这些位置时，均可以达到良好的电磁输入效果， 并不会影响液晶面板的显示功能。
此外，在一些实施例中，所述电磁膜片210、液晶面板300及光学膜片组件150的形状和面积均相同，且所述电磁膜片210的边缘与所述液晶面板300和光学膜片组件150的边缘对齐。即使得所述电磁膜片210与所述液晶面板300和光学膜片组件150完全对应对齐，所述电磁膜片210完全覆盖所述液晶面板300所对应的位置，使得整个所述液晶面板300所对应的位置都能获得电磁输入效果。此外，在另一些实施例中，所述电磁膜片210的面积小于与所述液晶面板300或光学膜片组件150的面积，且所述电磁膜片210位于所述液晶面板300或光学膜片组件150的周侧某处。即使得所述电磁膜片210并不与所述液晶面板300和光学膜片组件150完全对应对齐，只是与所述液晶面板300某一部位处对应，仅仅使得该对应部分具有电磁输入效果，满足不同的使用需求。
此外，在另一些实施例中，如图3所示，所述电磁膜片200还可以设置于所述发光结构和扩散板140之间。即，所述电磁膜片200可以与所述扩散板140之间保持一定的距离，也可以将所述电磁膜片200贴设于所述扩散板140上。当所述电磁膜片200设置于所述发光结构和扩散板140之间时，同样可以实现电磁输入功能。而且，所述电磁膜片200与所述发光结构之间的距离大于等于10cm。具体地，所述电磁膜片200与所述直下式灯条120的距离大于等于10cm。因为所述电磁膜片200中设置有电磁线圈，而电磁线圈中会产生涡流，如果所述直下式灯条120与所述电磁膜片的距离小于10cm，就会对电磁线圈中的涡流产生影响，从而会影响所述电磁膜片200的正常工作。此外，还可以在所述电磁膜片200与所述直下式灯条120之间设置矽钢片，可以隔离所述直下式灯条120对所述电磁膜片200的影响。
此外，在一些实施例中，所述电磁膜片210与所述扩散板140的形状和面积均相同，且所述电磁膜片210的边缘与所述扩散板140的边缘对齐。即使得所述电磁膜片210与所述扩散板140完全对应对齐，所述电磁膜片210完全覆盖所述扩散板140，使得整个所述扩散板140所对应的位置处都能获得电磁输入效果。此外，在另一些实施例中，所述电磁膜片210的面积小于与所述扩散 板140的面积，且所述电磁膜片210位于所述扩散板140的周侧某处。即使得所述电磁膜片210并不与所述扩散板140完全对应对齐，只是位于所述扩散板140某一部位处对应，仅仅使得该对应部位具有电磁输入效果，以满足不同的使用需求。
此外，在另一些实施例中，如图4所示，所述电磁膜片200还可以直接设置于所述扩散板140中，同样可以实现电磁输入功能。
此外，所述直下式背光显示模组还包括设置于所述液晶面板300上的触摸输入模组，所述触摸输入模组包括设置于所述液晶面板300上(空气侧)的触摸输入板，以及与所述触摸输入板连接的触摸控制电路，所述触摸控制电路与所述主控电路连接。利用触摸控制电路可以对所述触摸输入板进行控制，以控制触摸输入功能的开启、关闭及调节，使得所述直下式背光显示模组具有普通的触摸输入功能。而且，所述触摸输入模组的触摸输入板也具有良好的透光性，也不会影响所述直下式背光显示模组的显示效果。此外，普通的所述触摸输入模组不需要对输入的压力轻重做出其他反应，用手和专用笔都能操作。而所述电磁输入模组可感应输入压力的轻重，可以模拟真实书写笔记，但是需要专用的电磁笔，才能发挥其专业性。所述触摸输入模组可以与所述电磁输入模组同时设置于所述液晶面板300的两侧，也可以单独设置于所述液晶面板300的空气侧表面。这样，就可以同时满足不同的使用需求。
而且，所述触摸输入模组可设置为电容输入模组或红外输入模组。当所述所述触摸输入模组设置为电容输入模组时，所述电容输入模组包括设置于所述液晶面板300上(空气侧)的电容输入板，以及与所述电容输入板连接的电容控制电路，所述电容控制电路与所述主控电路连接。而当所述所述触摸输入模组设置为红外输入模组时，所述红外输入模组包括设置于所述液晶面板300上(空气侧)的红外感应板，以及与所述红外感应板连接的红外控制电路，所述红外控制电路与所述主控电路连接。
此外，所述直下式背光显示模组还包括设置于所述触摸输入板表面的钢化玻璃310。利用所述钢化玻璃310，可以对所述触摸输入板及液晶面板300提 供保护。此外，当不具有所述电容输入结构时，所述钢化玻璃310也可以直接设置于所述液晶面板300的空气侧表面，直接对所述液晶面板300进行保护。
此外，所述直下式背光显示模组还包括中框结构，所述扩散板、光学膜片组件、电磁膜片及液晶面板均固定于所述中框结构中。利用所述中框结构，可以为所述扩散板140、光学膜片组件150、电磁膜片210及液晶面板300提供安装基础和保护壳体，使其结构更加牢固可靠。此外，还可将所述主控电路、电磁控制电路及触摸控制电路设置于所述中框结构上。
此外，本发明还提出一种显示设备，包括如上所述的直下式背光显示模组。本发明提出的直下式背光显示模组及显示设备，通过将电磁输入技术与直下式背光显示模组设置为一体，以较低的成本在直下式背光模式下实现电磁输入和背光显示的一体化，实现直下式背光显示模组的多功能化；而且，不仅能够实现液晶显示功能，还能实现触控和模拟轨迹，还能模拟真实笔迹书写，具有良好的用户体验效果。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对所述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种直下式背光显示模组，其特征在于，包括相互对应的背光模组和液晶面板，以及与所述背光模组和液晶面板连接的主控电路；
    所述背光模组包括背板，设置于所述背板上的发光结构，与所述发光结构正对的扩散板，以及设置于所述发光结构与液晶面板之间的电磁输入模组；
    所述电磁输入模组包括设置于所述发光结构与液晶面板之间的电磁膜片，以及与所述电磁膜片电连接的电磁控制电路，所述电磁膜片的透光率大于或等于50％，所述电磁膜片通过所述电磁控制电路与所述主控电路连接。
  2. 根据权利要求1所述的直下式背光显示模组，其特征在于，所述电磁膜片设置于所述发光结构和扩散板之间。
  3. 根据权利要求2所述的直下式背光显示模组，其特征在于，所述电磁膜片与所述发光结构之间的距离大于等于10cm。
  4. 根据权利要求2所述的直下式背光显示模组，其特征在于，所述电磁膜片与所述发光结构之间设置有矽钢片。
  5. 根据权利要求1所述的直下式背光显示模组，其特征在于，所述电磁膜片设置于所述扩散板中。
  6. 根据权利要求1-5任意一项所述的直下式背光显示模组，其特征在于，所述电磁膜片与扩散板的形状和面积均相同，且所述电磁膜片的边缘与所述扩散板的边缘对齐；
    或者，所述电磁膜片的面积小于所述扩散板的面积，且所述电磁膜片位于所述扩散板的周侧某处。
  7. 根据权利要求1-5任意一项所述的直下式背光显示模组，其特征在于，还包括设置于所述液晶面板上的触摸输入模组，所述触摸输入模组包括设置于所述液晶面板上的触摸输入板，以及与所述触摸输入板连接的触摸控制电路，所述触摸控制电路与所述主控电路连接。
  8. 根据权利要求1-5任意一项所述的直下式背光显示模组，其特征在于，所述光学膜片组件包括依次叠设的反射膜、增光膜及扩散膜，所述反射膜与所 述扩散板对应，所述扩散膜与所述液晶面板对应；
    所述增光膜包括依次设置的棱镜膜、微透镜及反射偏光片，所述棱镜膜与所述反射膜对应，所述反射偏光片与所述扩散膜对应。
  9. 根据权利要求1-5任意一项所述的直下式背光显示模组，其特征在于，所述发光结构包括设置于所述背板上并与所述扩散板正对的直下式灯条，以及围设于所述直下式灯条底侧和周侧的反射片，所述反射片与所述扩散板对应。
  10. 一种显示设备，其特征在于，包括如权利要求1-9任意一项所述的直下式背光显示模组。
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