WO2021254316A1 - 显示模组及其制作方法、显示装置 - Google Patents
显示模组及其制作方法、显示装置 Download PDFInfo
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- WO2021254316A1 WO2021254316A1 PCT/CN2021/100055 CN2021100055W WO2021254316A1 WO 2021254316 A1 WO2021254316 A1 WO 2021254316A1 CN 2021100055 W CN2021100055 W CN 2021100055W WO 2021254316 A1 WO2021254316 A1 WO 2021254316A1
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- Prior art keywords
- light
- guide plate
- light guide
- liquid crystal
- unit
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Images
Classifications
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- G—PHYSICS
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- 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
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- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
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- 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
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- 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
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- 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
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- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- 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
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- 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
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- 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
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- 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
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- 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
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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
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- G—PHYSICS
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- 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
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- 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
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Definitions
- This application relates to the field of display technology, in particular to a display module, a manufacturing method thereof, and a display device.
- QD display products With the continuous advancement of QD (quantum dot) materials, QD display products have been widely used. At present, QD display products adopt two technologies, one is electroluminescence QD technology, and the other is photoluminescence QD technology.
- the commonly used photoluminescence technology is to excite QD materials by blue light. Because the shorter the wavelength, the greater the energy of the blue light. Therefore, using shorter wavelength blue light to excite QD can get better excitation light utilization, but shorter wavelength blue light It easily penetrates the display module, enters human eyes, and harms human eyes.
- a display module including:
- a light guide plate the light guide plate includes adjacent light-incident surfaces and light-exit surfaces;
- a blue light source arranged at the light incident surface of the light guide plate
- a display panel arranged on one side of the light-emitting surface of the light guide plate
- the display panel includes a plurality of display units and light-shielding walls separating adjacent display units; each of the display units includes a quantum dot unit and a liquid crystal unit arranged side by side, and the liquid crystal unit and the quantum dot The transparent barrier wall between the cells, and the first light-shielding pattern arranged on the side of the liquid crystal unit away from the light guide plate; the orthographic projection of the liquid crystal unit on the light guide plate falls into the first light-shielding pattern In the orthographic projection on the light guide plate, the orthographic projection of the quantum dot unit on the light guide plate and the gap between the adjacent first shading patterns on the light guide plate overlap.
- the display panel further includes:
- the light propagation direction changing structure arranged on the side of the liquid crystal cell facing the light guide plate can deflect incident vertical light.
- the display panel further includes:
- a passivation layer located between the light propagation direction changing structure and the liquid crystal cell
- the driving electrode located between the passivation layer and the liquid crystal cell is used to drive the deflection of the liquid crystal in the liquid crystal cell;
- the refractive index of the light propagation direction changing structure is greater than the refractive index of the passivation layer, the refractive index of the passivation layer is greater than the refractive index of the driving electrode, and the refractive index of the driving electrode is greater than the refraction of the liquid crystal Rate.
- the light propagation direction changing structure includes a plurality of wedge-shaped structures arranged in parallel, and the height of the wedge-shaped structures is 1.5 ⁇ m to 3 ⁇ m.
- the light-emitting surface of the light guide plate is provided with a plurality of second light-shielding patterns arranged at intervals, and the orthographic projection of the quantum dot unit on the light guide plate falls into the second light-shielding pattern on the light guide plate.
- the orthographic projection of the light guide plate the orthographic projection of the liquid crystal unit on the light guide plate and the gap between the adjacent second light-shielding patterns overlap the orthographic projection of the light guide plate.
- the orthographic projection of the transparent retaining wall on the light guide plate falls within the orthographic projection of the second shading pattern on the light guide plate.
- the orthographic projection of the transparent retaining wall on the light guide plate falls within the orthographic projection of the first shading pattern on the light guide plate.
- the thickness of the first shading pattern is 1.5 ⁇ m-2 ⁇ m.
- the wavelength of the light emitted by the blue light source is less than 410 nm.
- the weight percentage of the scattering particles in the quantum dot unit is 1% to 5%.
- the quantum dot unit and the liquid crystal unit arranged side by side in each display unit and the transparent barrier wall are surrounded by the light-shielding barrier wall.
- the first light-shielding pattern covers a side of the liquid crystal unit away from the light guide plate and a side of the transparent barrier wall away from the light guide plate.
- the embodiment of the present application provides a display device including the above-mentioned display module.
- the display device further includes a processor.
- the processor is configured to adjust the deflection angle of the liquid crystal to adjust the luminous intensity of the quantum dot unit by controlling the voltage applied to the liquid crystal cell via the driving electrode.
- the embodiment of the present application provides a method for manufacturing a display module, including:
- a light guide plate is provided, the light guide plate includes adjacent light-incident surfaces and light-exit surfaces;
- a display panel is formed on one side of the light-emitting surface of the light guide plate, the display panel includes a plurality of display units, adjacent display units are separated by a light-shielding wall, each display unit includes a quantum dot unit and a liquid crystal unit arranged side by side, The liquid crystal unit and the quantum dot unit are separated by a transparent barrier wall, the liquid crystal unit is provided with a first light shielding pattern on the side away from the light guide plate, and the orthographic projection of the liquid crystal unit on the light guide plate falls Into the orthographic projection of the first shading pattern on the light guide plate.
- FIG. 1 is a schematic diagram of a display module according to an embodiment of the application
- FIG. 2 is a schematic diagram of the light path when the liquid crystal is not deflected according to the embodiment of the application;
- FIG. 3 is a schematic diagram of the light path when the liquid crystal is deflected according to the embodiment of the application;
- Figure 4 is a schematic diagram of the principle of liquid crystal changing the optical path
- Fig. 5 is a schematic plan view of the display unit.
- the embodiments of the present application provide a display module, a manufacturing method thereof, and a display device, which can increase the utilization rate of excitation light and reduce the damage of blue light to eyes.
- An embodiment of the present application provides a display module, as shown in FIG. 1, including:
- the light guide plate 1 the light guide plate includes adjacent light-incident surfaces and light-exit surfaces;
- a blue light source 17 arranged at the light incident surface of the light guide plate
- the excitation light emitted by the blue light source enters from the side of the light guide plate and exits through the light exit surface of the light guide plate. Compared with the excitation light that is incident perpendicularly (perpendicular to the light exit surface), the excitation light is incident laterally (parallel to the light exit surface).
- the light path of the excitation light is longer, and there is enough light path, which can improve the utilization rate of the excitation light; after the excitation light exits the light-emitting surface of the light guide plate, enters the liquid crystal cell of the display panel, the deflection of the liquid crystal can make the excitation light Enter the quantum dot unit to excite the quantum dot unit to emit light; a first light-shielding pattern is provided on the side of the liquid crystal unit away from the light guide plate, which can absorb the excitation light that does not enter the quantum dot unit and prevent the excitation light from escaping from the liquid crystal unit to damage human eyes; In addition, there are light-shielding barriers between adjacent display units, which can absorb the light passing through the quantum dot unit laterally and prevent crosstalk caused by light leakage.
- the quantum dot unit may include a plurality of quantum dot units of different colors, and the quantum dot units of different colors emit light of different colors under the excitation of blue light, which can be mixed into white light.
- the quantum dot unit of this embodiment may include a red quantum dot unit 121, a green quantum dot unit 122 and a blue quantum dot unit 123.
- one display unit is equivalent to one pixel.
- the area of the first shading pattern 15 may be larger than the area of the corresponding liquid crystal cell 14 and extends to the area of the transparent barrier wall 13, mainly to prevent excitation light from exiting through the liquid crystal cell 14.
- the first shading pattern 15 may be a black photoresist.
- the material or gray reflective material, the thickness is about 1.5 ⁇ m-2 ⁇ m.
- Figure 5 is a schematic top view of the display unit
- Figure 1 is a schematic cross-sectional view of Figure 5 in the AA' direction.
- the light-shielding wall 11 surrounds three sides of the liquid crystal unit 14. The side without the light-shielding wall 11 is used to allow the light emitted by the liquid crystal unit 14 to enter the quantum dot unit.
- the thickness of the light-shielding wall 11 is equal to the cell thickness of the display panel, which can be 2 ⁇ m ⁇ 3 ⁇ m, black photoresist material or gray reflective material can be used; transparent retaining wall 13 can be made of transparent resin, commonly used materials are AGC5023 (acrylic), the thickness of transparent retaining wall 13 is equal to the box thickness of the display panel, which can be 2 ⁇ m ⁇ 3 ⁇ m.
- the quantum dot unit can be made of PR-type QD material, the thickness of the material is about 2 ⁇ m to 3 ⁇ m, which can be obtained through glue exposure or printing. Compared with the quantum dot unit in the related art, the content of scattering particles in the quantum dot unit of this embodiment can be reduced.
- the optical path of the excitation light of the quantum dot unit in the related art is equivalent to the thickness of the quantum dot unit, while the excitation light of the quantum dot unit of this embodiment is incident from the side, the optical path of the excitation light is equivalent to the width of the quantum dot unit Or the length is greater than the thickness of the quantum dot unit, so that the optical path of the excitation light is greatly improved; in addition, the excitation light source can use a stronger light source with sufficient excitation ability, so it can reduce the scattering of particles content. If the content of scattering particles is large, it will cause the side leakage of blue light and block the spread of light.
- the weight percentage of the scattering particles in the quantum dot unit can be reduced to 1% to 5%.
- the transparent barrier wall 13 and the light-shielding barrier wall 11 define the pixel area where the liquid crystal cell 14 is located, and liquid crystal can be dripped into the pixel area to form the liquid crystal cell 14.
- the display module includes a light guide plate 1 and a blue light source 17 arranged on the light entrance surface of the light guide plate 1.
- the excitation light emitted by the blue light source 17 enters the light guide plate and enters the display panel through the light exit surface of the light guide plate.
- the blue light source 17 can be a blue LED, and the wavelength of the light emitted by the blue light source 17 can be less than 410 nm, for example, 395 nm.
- the quantum dot unit has a relatively high absorption rate of blue light; of course, the light emitted by the blue light source 17 can also be other Wave band, such as the 460nm band.
- the light-emitting surface of the light guide plate 1 is provided with a plurality of second light-shielding patterns 3 arranged at intervals, and the orthographic projection of the quantum dot unit on the light guide plate falls into the second light-shielding pattern 3 on the light guide plate.
- the gap between the orthographic projection of the liquid crystal unit 14 on the light guide plate and the orthographic projection of the adjacent second light-shielding pattern 3 on the light guide plate overlaps, specifically, quantum dots
- the orthographic projection of the unit on the light guide plate coincides with the orthographic projection of the second shading pattern 3 on the light guide plate.
- the orthographic projection of the liquid crystal unit 14 on the light guide plate and the adjacent second shading pattern 3 The orthographic projections of the gap on the light guide plate coincide. In this way, the light emitted from the light guide plate 1 will only enter the liquid crystal unit 14 and will not enter the quantum dot unit.
- a thin film transistor structure is provided on a base substrate 2.
- the thin film transistor includes a gate 7, a gate insulating layer 4, an active layer 18, a source 8, and a drain 9.
- the thin film transistor is on the light guide plate 1.
- the orthographic projection falls within the orthographic projection of the second light-shielding pattern 3 on the light guide plate, which can also prevent the light emitted by the light guide plate 1 from irradiating the thin film transistor structure, which affects the performance of the thin film transistor.
- the display panel further includes:
- the light propagation direction changing structure 5 arranged on the side of the liquid crystal cell 14 facing the light guide plate 1 can deflect incident vertical light, and the light propagation direction changing structure 5 can deflect the light emitted from the light guide plate 1, and more
- the ground is reflected by the liquid crystal cell and acts on the quantum dot cell to improve the utilization rate of excitation light and display brightness.
- the light propagation direction changing structure 5 may only be arranged corresponding to the liquid crystal cell 14, and the light propagation direction changing structure 5 may be made of a transparent medium layer, which has a better refractive index.
- the light propagation direction changing structure 5 may include a plurality of wedge-shaped structures arranged in parallel, and the height of the wedge-shaped structures is 1.5 ⁇ m to 3 ⁇ m.
- the light propagation direction changing structure 5 is not limited to adopting a wedge-shaped structure, and can also be adjusted on the basis of the wedge-shaped structure; wherein the oblique angle of the wedge-shaped structure needs to be adjusted according to the refractive index of the wedge-shaped structure to deflect incident vertical light.
- the display panel further includes:
- a passivation layer 6 located between the light propagation direction changing structure 5 and the liquid crystal cell 14;
- the driving electrode 10 located between the passivation layer 6 and the liquid crystal cell 14 is used to drive the deflection of the liquid crystal in the liquid crystal cell;
- the refractive index of the light propagation direction changing structure 5 is greater than the refractive index of the passivation layer 6, the refractive index of the passivation layer 6 is greater than the refractive index of the drive electrode 10, and the refractive index of the drive electrode 10 is greater than The refractive index of the liquid crystal can effectively deflect the incident vertical light.
- the liquid crystal cell 14 also includes an alignment layer 19. Since the thickness of the liquid crystal layer is relatively small, between 2um and 3um, a single-layer alignment layer 19 can be provided to simplify the structure of the liquid crystal cell.
- the alignment layer 19 can be made of poly Imide.
- FIG. 2 is a schematic diagram of the optical path when the liquid crystal is not deflected according to the embodiment of the application
- FIG. 3 is a schematic diagram of the optical path when the liquid crystal is deflected according to the embodiment of the application
- FIG. 4 is a schematic diagram of the principle of the liquid crystal changing the optical path.
- the liquid crystal has two extreme states, as shown in Figure 4, one can be called the ground state and the other is the fully deflected state. In the ground state, the liquid crystal has a refraction effect on light, and the deflection angle of the light through the liquid crystal is small.
- the light emitted by the light guide plate 1 enters the display panel and is absorbed by the first shading pattern 15; when in the excited state, the light is The liquid crystal surface is totally reflected, the light path changes, and the light after changing the light path can excite the quantum dot unit.
- the light emitted by the light guide plate 1 enters the display panel and then the light path changes, enters the quantum dot unit, and turns to incomplete light. It will be absorbed by the first shading pattern 15 and the shading wall 11, and no side leakage will occur.
- the embodiment of the present application provides a display device including the above-mentioned display module.
- the display device includes but is not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, power supply and other components.
- the structure of the above display device does not constitute a limitation on the display device, and the display device may include more or less of the above components, or combine some components, or arrange different components.
- the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.
- the display device may be any product or component with a display function, such as a TV, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board, and a backplane.
- a display function such as a TV, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc.
- the display device also includes a flexible circuit board, a printed circuit board, and a backplane.
- the embodiment of the present application provides a method for manufacturing a display module, including:
- a light guide plate is provided, the light guide plate includes adjacent light-incident surfaces and light-exit surfaces;
- a display panel is formed on one side of the light-emitting surface of the light guide plate, the display panel includes a plurality of display units, adjacent display units are separated by a light-shielding wall, each display unit includes a quantum dot unit and a liquid crystal unit arranged side by side, The liquid crystal unit and the quantum dot unit are separated by a transparent barrier wall, the liquid crystal unit is provided with a first light shielding pattern on the side away from the light guide plate, and the orthographic projection of the liquid crystal unit on the light guide plate falls Into the orthographic projection of the first shading pattern on the light guide plate.
- the excitation light emitted by the blue light source enters from the side of the light guide plate and exits through the light exit surface of the light guide plate. Compared with the excitation light that is incident perpendicularly (perpendicular to the light exit surface), the excitation light is incident laterally (parallel to the light exit surface).
- the light path of the excitation light is longer, and there is enough light path, which can improve the utilization rate of the excitation light; after the excitation light exits the light-emitting surface of the light guide plate, enters the liquid crystal cell of the display panel, the deflection of the liquid crystal can make the excitation light Enter the quantum dot unit to excite the quantum dot unit to emit light; a first light-shielding pattern is provided on the side of the liquid crystal unit away from the light guide plate, which can absorb the excitation light that does not enter the quantum dot unit and prevent the excitation light from escaping from the liquid crystal unit to damage human eyes; In addition, there are light-shielding barriers between adjacent display units, which can absorb the light passing through the quantum dot unit laterally and prevent crosstalk caused by light leakage.
- the lower substrate When fabricating the display module, the lower substrate can be fabricated first, and the thin film transistor structure is formed on the base substrate 2.
- the thin film transistor structure includes the gate 7, the gate insulating layer 4, the source 8, the drain 9 and the active layer 18. Then, a passivation layer 6 including a via hole is formed, and a driving electrode 10 is formed on the passivation layer 6, and the driving electrode 10 is connected to the drain 9 through the via hole of the passivation layer 6. Then, an alignment layer 19 is formed on the driving electrode 10.
- the passivation layer and the driving electrode should be made of light-transmitting materials. It is worth noting that after the gate insulating layer 4 is formed, the light propagation direction changing structure 5 needs to be fabricated, and then the passivation layer 6 is fabricated.
- the upper substrate can be fabricated, and the first light-shielding pattern 15, the light-shielding wall 11 and the transparent wall 13 are formed on the base substrate 16.
- the light-shielding wall 11 and the transparent wall 13 define the area where the quantum dot unit is located and the area where the liquid crystal unit is located.
- the light-shielding barrier wall 11 and the transparent barrier wall 13 can limit the flow of quantum dots and liquid crystals on the one hand, and can also play a role in supporting the thickness of the cell on the other hand.
- the light-shielding retaining wall 11 and the transparent retaining wall 13 can be made by printing.
- the upper substrate and the lower substrate are boxed together, and the light guide plate with the second light-shielding pattern 3 is attached to the lower substrate to complete the manufacture of the display module.
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Abstract
Description
Claims (17)
- 一种显示模组,包括:导光板,所述导光板包括相邻的入光面和出光面;设置在所述导光板入光面处的蓝光光源;设置在所述导光板出光面一侧的显示面板;其中,所述显示面板包括多个显示单元以及将相邻显示单元间隔的遮光挡墙;每一所述显示单元包括并排设置的量子点单元和液晶单元、将所述液晶单元和所述量子点单元间隔的透明挡墙、以及设置在所述液晶单元远离所述导光板的一侧的第一遮光图形;所述液晶单元在所述导光板上的正投影落入所述第一遮光图形在所述导光板上的正投影内,所述量子点单元在所述导光板上的正投影与相邻第一遮光图形之间的间隙在所述导光板上的正投影存在交叠。
- 根据权利要求1所述的显示模组,其中,所述显示面板还包括:设置在所述液晶单元朝向所述导光板一侧的光传播方向改变结构,能够使入射的垂直光偏转。
- 根据权利要求2所述的显示模组,其中,所述显示面板还包括:位于所述光传播方向改变结构和所述液晶单元之间的钝化层;位于所述钝化层和所述液晶单元之间的驱动电极,用于驱动所述液晶单元中的液晶偏转;所述光传播方向改变结构的折射率大于所述钝化层的折射率,所述钝化层的折射率大于所述驱动电极的折射率,所述驱动电极的折射率大于所述液晶的折射率。
- 根据权利要求2所述的显示模组,其中,所述光传播方向改变结构包括多个平行排布的楔形结构,所述楔形结构的高度为1.5um到3μm。
- 根据权利要求1所述的显示模组,其中,所述导光板的出光面设置有多个间隔排布的第二遮光图形,所述量子点单元在所述导光板上的正投影落入所述第二遮光图形在所述导光板上的正投影内,所述液晶单元在所述导光板上的正投影与相邻第二遮光图形之间的间 隙在所述导光板上的正投影存在交叠。
- 根据权利要求5所述的显示模组,其中,所述透明挡墙在所述导光板上的正投影落入所述第二遮光图形在所述导光板上的正投影内。
- 根据权利要求6所述的显示模组,其中,所述透明挡墙在所述导光板上的正投影落入所述第一遮光图形在所述导光板上的正投影内。
- 根据权利要求1所述的显示模组,其中,所述第一遮光图形的厚度为1.5μm~2μm。
- 根据权利要求1所述的显示模组,其中,所述蓝光光源发出的光线的波长小于410nm。
- 根据权利要求1所述的显示模组,其中,所述量子点单元内,散射粒子的重量百分比为1%~5%。
- 根据权利要求1所述的显示模组,其中,每一所述显示单元中并排设置的量子点单元和液晶单元以及所述透明挡墙被所述遮光挡墙所环绕。
- 根据权利要求11所述的显示模组,其中,在每一显示单元中,所述第一遮光图形覆盖所述液晶单元远离所述导光板的一侧、以及所述透明挡墙远离所述导光板的一侧。
- 一种显示装置,包括的显示模组;所述显示模组包括:导光板,所述导光板包括相邻的入光面和出光面;设置在所述导光板入光面处的蓝光光源;设置在所述导光板出光面一侧的显示面板;其中,所述显示面板包括多个显示单元以及将相邻显示单元间隔的遮光挡墙;每一所述显示单元包括并排设置的量子点单元和液晶单元、将所述液晶单元和所述量子点单元间隔的透明挡墙、以及设置在所述液晶单元远离所述导光板的一侧的第一遮光图形;所述液晶单元在所述导光板上的正投影落入所述第一遮光图形在所述导光板上的正投影内,所述量子点单元在所述导光板上的正投影与相邻第一遮光图形之间的间隙在所述导光板上的正投影存在交叠。
- 根据权利要求13所述的显示装置,其中,所述显示面板还包括:设置在所述液晶单元朝向所述导光板一侧的光传播方向改变结构,能够使入射的垂直光偏转。
- 根据权利要求14所述的显示装置,其中,所述显示面板还包括:位于所述光传播方向改变结构和所述液晶单元之间的钝化层;位于所述钝化层和所述液晶单元之间的驱动电极,用于驱动所述液晶单元中的液晶偏转;所述光传播方向改变结构的折射率大于所述钝化层的折射率,所述钝化层的折射率大于所述驱动电极的折射率,所述驱动电极的折射率大于所述液晶的折射率。
- 根据权利要求15所述的显示装置,还包括处理器;其中,所述处理器用于通过控制经由所述驱动电极施加在所述液晶单元上的电压,调节液晶偏转的角度以调整所述量子点单元的发光强度。
- 一种显示模组的制作方法,包括:提供一导光板,所述导光板包括相邻的入光面和出光面;在所述导光板的入光面形成蓝光光源;在所述导光板的出光面一侧形成显示面板,所述显示面板包括多个显示单元,相邻显示单元通过遮光挡墙间隔开,每一显示单元包括并排设置的量子点单元和液晶单元,所述液晶单元和所述量子点单元通过透明挡墙间隔开,所述液晶单元远离所述导光板的一侧设置有第一遮光图形,所述液晶单元在所述导光板上的正投影落入所述第一遮光图形在所述导光板上的正投影内。
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102768433A (zh) * | 2012-08-01 | 2012-11-07 | 友达光电股份有限公司 | 一种液晶显示设备 |
CN106405918A (zh) * | 2015-07-31 | 2017-02-15 | 三星电子株式会社 | 显示面板及具有该显示面板的显示装置 |
CN107065063A (zh) * | 2017-06-15 | 2017-08-18 | 青岛海信电器股份有限公司 | 一种液晶显示装置 |
US20190361293A1 (en) * | 2017-02-16 | 2019-11-28 | Korea University Research And Business Foundation, Sejong Campus | Display device |
CN111048693A (zh) * | 2019-12-06 | 2020-04-21 | 深圳市华星光电半导体显示技术有限公司 | 一种量子点彩膜基板及其制作方法 |
CN111580307A (zh) * | 2020-06-17 | 2020-08-25 | 京东方科技集团股份有限公司 | 显示模组及其制作方法、显示装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102654665B (zh) * | 2011-12-14 | 2014-02-26 | 京东方科技集团股份有限公司 | 液晶透镜型调光装置及显示器 |
CN103323970B (zh) * | 2013-06-20 | 2015-07-08 | 京东方科技集团股份有限公司 | 显示面板及其制备方法、显示装置 |
US9651825B2 (en) * | 2014-09-23 | 2017-05-16 | Au Optronics Corporation | Liquid crystal lens display device with light shield structure |
KR20170128729A (ko) * | 2016-05-13 | 2017-11-23 | 삼성디스플레이 주식회사 | 표시 장치 |
CN106773218B (zh) * | 2017-01-22 | 2018-07-20 | 京东方科技集团股份有限公司 | 显示装置 |
CN106773379B (zh) * | 2017-02-06 | 2020-02-07 | 京东方科技集团股份有限公司 | 显示面板、显示装置及其控制方法 |
CN107945760B (zh) * | 2018-01-02 | 2020-08-14 | 京东方科技集团股份有限公司 | 液晶显示面板及其驱动方法、显示装置 |
CN108415190B (zh) * | 2018-03-12 | 2021-12-10 | 京东方科技集团股份有限公司 | 显示面板及其灰阶调控方法和显示装置 |
US10558100B2 (en) * | 2018-03-28 | 2020-02-11 | a.u. Vista Inc. | Liquid crystal display devices and methods for manufacturing such devices |
CN110888270B (zh) * | 2018-09-10 | 2021-04-30 | 京东方科技集团股份有限公司 | 一种显示面板和显示装置 |
KR20210095274A (ko) * | 2020-01-22 | 2021-08-02 | 삼성디스플레이 주식회사 | 백라이트 유닛 및 이를 포함하는 표시 장치 |
-
2020
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-
2021
- 2021-06-15 US US17/770,262 patent/US11906838B2/en active Active
- 2021-06-15 WO PCT/CN2021/100055 patent/WO2021254316A1/zh active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102768433A (zh) * | 2012-08-01 | 2012-11-07 | 友达光电股份有限公司 | 一种液晶显示设备 |
CN106405918A (zh) * | 2015-07-31 | 2017-02-15 | 三星电子株式会社 | 显示面板及具有该显示面板的显示装置 |
US20190361293A1 (en) * | 2017-02-16 | 2019-11-28 | Korea University Research And Business Foundation, Sejong Campus | Display device |
CN107065063A (zh) * | 2017-06-15 | 2017-08-18 | 青岛海信电器股份有限公司 | 一种液晶显示装置 |
CN111048693A (zh) * | 2019-12-06 | 2020-04-21 | 深圳市华星光电半导体显示技术有限公司 | 一种量子点彩膜基板及其制作方法 |
CN111580307A (zh) * | 2020-06-17 | 2020-08-25 | 京东方科技集团股份有限公司 | 显示模组及其制作方法、显示装置 |
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