TW202320031A - Display device - Google Patents

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TW202320031A
TW202320031A TW110141199A TW110141199A TW202320031A TW 202320031 A TW202320031 A TW 202320031A TW 110141199 A TW110141199 A TW 110141199A TW 110141199 A TW110141199 A TW 110141199A TW 202320031 A TW202320031 A TW 202320031A
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light
layer
display device
blue
emitting
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TW110141199A
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TWI789100B (en
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李璟林
李炫運
姜丞鴻
林柏榮
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大陸商業成科技（成都）有限公司
大陸商業成光電（深圳）有限公司
大陸商業成光電（無錫）有限公司
英特盛科技股份有限公司
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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
    • G09F9/33—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 semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements

Abstract

The present invention is a display device, which comprises a substrate, a plurality of light-emitting elements, a plurality of fluorescent units, a protective layer, a shielding layer, and a cover layer. The light-emitting elements are arranged in an array on the substrate. Each fluorescent unit is covered around one of the light-emitting element. The protective layer covers all the fluorescent units, and the protective layer forms a bonding plane on the side facing away from the substrate. The shielding layer is set on the bonding plane. The cover plate is set on the shielding layer. The shielding layer shields the light emitted from the sides of each light-emitting element to improve the display quality.

Description

顯示裝置display device

本發明係有關於顯示裝置，尤指一種減少顯示裝置的發光元件之光線互相干擾的結構。The invention relates to a display device, in particular to a structure for reducing mutual interference of light rays of light-emitting elements of the display device.

對於發光二極體(LED)實現發出白光的方式，目前至少有三種方法，第一種方法是在藍色發光二極體上覆蓋被藍光激發的黃色螢光粉，藍色發光二極體發出的藍光與黃色螢光粉發出的黃光互補形成白光。第二種方法是藍色發光二極體上塗覆綠色螢光粉和紅色螢光粉，通過藍色發光二極體發出的藍光與綠色螢光粉發出的綠光、紅色螢光粉紅光複合得到白光。第三種方法是在紫光發光二極體或紫外光發光二極體上塗佈三原色的螢光粉或多種顏色的螢光粉，利用紫外光發光二極體發射的長波紫外光(370nm-380nm)或紫光(380nm-410nm)來激發螢光粉而實現白光發射。There are currently at least three methods for light-emitting diodes (LEDs) to emit white light. The first method is to cover the blue light-emitting diodes with yellow phosphor powder excited by blue light, and the blue light-emitting diodes emit light. The blue light from the yellow phosphor complements the yellow light to form white light. The second method is to coat green phosphor powder and red phosphor powder on the blue light-emitting diode, and combine the blue light emitted by the blue light-emitting diode with the green light emitted by the green phosphor powder and the red phosphor pink light. white light. The third method is to coat phosphor powders of three primary colors or phosphor powders of multiple colors on the ultraviolet light-emitting diodes or ultraviolet light-emitting diodes, and utilize long-wave ultraviolet light (370nm-380nm) emitted by ultraviolet light-emitting diodes ) or purple light (380nm-410nm) to excite the phosphor to achieve white light emission.

前述的三種發光二極體(LED)實現發出白光的方式，可以應用在液晶顯示面板作為背光模組的發光源，例如：使用迷你發光二極體(Mini LED)作為背光模組的發光源，將能夠在更小的混光距離內實現更好的亮度均勻性，且由於採用局部調光設計，其擁有更精細的高動態範圍(HDR)分區，讓黑的更深邃、亮的更明亮，從而大幅提升液晶顯示的對比度。另外發光二極體可以組裝作為點矩陣顯示裝置，利用矩陣排列的發光二極體顯示文字或圖樣。The aforementioned three light-emitting diodes (LEDs) can be used to emit white light, which can be applied to liquid crystal display panels as the light source of the backlight module, for example: using mini LEDs as the light source of the backlight module, It will be able to achieve better brightness uniformity within a smaller light mixing distance, and due to the local dimming design, it has a finer high dynamic range (HDR) partition, making the black deeper and brighter brighter, Thereby greatly improving the contrast of the liquid crystal display. In addition, the light-emitting diodes can be assembled as a dot-matrix display device, using the light-emitting diodes arranged in a matrix to display characters or patterns.

此外，迷你發光二極體並非只是作為實現發出白光而已，也可以直接採用紅、綠、藍三原色的迷你發光二極體實現直顯全彩顯示裝置，直顯全彩顯示裝置具有高亮度、寬色域、高對比、高速回應、低功耗和長壽命等優勢，但是直顯全彩顯示裝置所需迷你發光二極體數量是背光模組的數百倍，因此僅迷你發光二極體的成本一項，直顯全彩顯示裝置就是背光模組的百倍以上，此外直顯全彩顯示裝置更高製造技術難度也疊高了成本。另外，直顯全彩顯示裝置需要每個迷你發光二極體按照灰度等級調節亮度，而背光模組僅需完成十餘個亮度調節，因此兩者的控制難度也相差一兩個數量級。In addition, mini light-emitting diodes are not only used to emit white light, but can also directly use mini light-emitting diodes in the three primary colors of red, green and blue to realize direct-view full-color display devices. Direct-view full-color display devices have high brightness, wide Color gamut, high contrast, high-speed response, low power consumption and long life, etc., but the number of mini light-emitting diodes required for direct display full-color display devices is hundreds of times that of backlight modules, so only mini light-emitting diodes In terms of cost, the direct display full-color display device is more than a hundred times that of the backlight module. In addition, the higher manufacturing technical difficulty of the direct display full-color display device also increases the cost. In addition, the direct display full-color display device requires each mini light-emitting diode to adjust the brightness according to the gray scale, while the backlight module only needs to complete more than ten brightness adjustments, so the control difficulty of the two is also one or two orders of magnitude different.

以白光的陣列顯示裝置而言，請參閱圖1所示，其主要包括基板10、複數個發光元件12、複數個螢光單元14、保護層16及蓋板層18，其中各發光元件12係以陣列排列方式設置在基板10上，各螢光單元14則是覆蓋在各發光元件12的周圍，而保護層16則是覆蓋在所有的螢光單元14上，並且在背對基板10的一面形成一貼合平面，蓋板層18是設在貼合平面上。但是發光元件12並非只有正面朝上發光，發光元件12的側面也會發光，使得各發光元件12的光線將會互相干擾，造成顯示模糊不清。For a white light array display device, please refer to FIG. 1, which mainly includes a substrate 10, a plurality of light emitting elements 12, a plurality of fluorescent units 14, a protective layer 16 and a cover layer 18, wherein each light emitting element 12 is Arranged in an array on the substrate 10, each fluorescent unit 14 covers the periphery of each light emitting element 12, and the protective layer 16 covers all the fluorescent units 14, and on the side facing away from the substrate 10 A bonding plane is formed, and the cover layer 18 is arranged on the bonding plane. However, the light-emitting elements 12 do not only emit light from the front side, but also emit light from the sides of the light-emitting elements 12, so that the light from each light-emitting element 12 will interfere with each other, resulting in blurred display.

為了解決上述的問題，請參閱圖2所示，圖2與圖1的陣列顯示裝置之差異在於，各螢光單元14僅覆蓋在各發光元件12的正面，在發光元件12與螢光單元14的側面之間填入黑色光學膠19，藉由黑色光學膠19遮蔽各發光元件12側面發出的光線，使得各發光元件12可以僅從正面發出光線，減少各發光元件12側面發出的光線的干擾問題。然而螢光單元14是使用點膠的厚度和分布位置不能被精確控制，導致各發光元件12的正面出光的開口大小不一，填入的黑色光學膠19也隨之改變形狀，進而讓陣列顯示裝置的產品良率變差。In order to solve the above-mentioned problems, please refer to FIG. 2. The difference between the array display device in FIG. 2 and FIG. Black optical glue 19 is filled between the sides of each light-emitting element 12, and the light emitted from the side of each light-emitting element 12 is shielded by the black optical glue 19, so that each light-emitting element 12 can only emit light from the front, reducing the interference of light emitted from the side of each light-emitting element 12 question. However, the thickness and distribution position of the fluorescent unit 14 cannot be precisely controlled by dispensing glue, resulting in different sizes of openings for the light emitting from the front of each light emitting element 12, and the filled black optical glue 19 also changes its shape accordingly, thereby allowing the array to display The product yield of the device deteriorates.

由於上述的螢光單元14是使用點膠方式製作造成產品良率變差，為了解決此一問題，請參閱圖3所示，圖3與圖1的圖2與圖1的陣列顯示裝置之差異在於，各螢光單元14僅覆蓋在各發光元件12的周圍，然後使用雷射清除各發光元件12之間的螢光單元14，使得各發光元件12與其上方螢光單元14之間形成開口，再將黑色光學膠19填入開口之中，即可解決螢光單元14是使用點膠的厚度和分布位置不能被精確控制的問題，但是此一製作方法耗時，無法大量生產，而且製作成本高。Since the above-mentioned fluorescent unit 14 is produced by dispensing glue, the yield rate of the product deteriorates. In order to solve this problem, please refer to FIG. 3, the difference between the array display device shown in FIG. 3 and FIG. That is, each fluorescent unit 14 only covers the surroundings of each light emitting element 12, and then laser is used to remove the fluorescent unit 14 between each light emitting element 12, so that an opening is formed between each light emitting element 12 and the upper fluorescent unit 14, Filling the opening with black optical glue 19 can solve the problem that the thickness and distribution position of the fluorescent unit 14 cannot be precisely controlled. However, this method is time-consuming, cannot be produced in large quantities, and is expensive high.

前述的各發光元件12之間的光擾問題，也會發生在直顯全彩顯示裝或者背光模組上，其原因是陣列顯示裝置、直顯全彩顯示裝置或者背光模組三者皆是在基板10上設置發光元件12，若是相鄰的發光元件12之間沒有任何的遮蔽物存在，將使得相鄰的發光元件12之間發生光擾問題，但是採用如圖2或圖3的方法各有其缺點存在，故如何解決發光元件12之間的光擾問題，而且產品良率不會變差，並且可以快速、大量且低成本的方式生產，將是目前亟待解決的問題。The light interference problem between the aforementioned light emitting elements 12 will also occur on the direct display full-color display device or the backlight module. The reason is that the array display device, the direct display full-color display device or the backlight module are all The light-emitting elements 12 are arranged on the substrate 10. If there is no shield between adjacent light-emitting elements 12, the problem of light interference will occur between adjacent light-emitting elements 12, but the method shown in Figure 2 or Figure 3 is adopted. Each has its own disadvantages, so how to solve the problem of light interference between light-emitting elements 12 without degrading the product yield and producing in a fast, large-scale and low-cost manner will be an urgent problem to be solved at present.

有鑑於先前技術的問題，本發明之一目的係在基板上的各發光元件之間不會有光擾的問題，而且可以快速、大量且低成本的方式生產出來。In view of the problems of the prior art, an object of the present invention is to avoid the problem of light interference among the light-emitting elements on the substrate, and to produce it in a rapid, mass and low-cost manner.

根據本發明之目的，提供一種顯示裝置，包括基板、複數個發光元件、保護層、遮蔽層及蓋板層，其中各發光元件係以陣列排列方式設置在基板上，保護層則是覆蓋在所有的發光元件上，且保護層在背對基板的一面形成一貼合平面，遮蔽層係設在貼合平面上，蓋板層是設在遮蔽層上，藉由遮蔽層遮擋各發光元件側面發出的光線，用以改善顯示品質。According to the object of the present invention, a display device is provided, including a substrate, a plurality of light emitting elements, a protective layer, a shielding layer and a cover layer, wherein each light emitting element is arranged on the substrate in an array, and the protective layer covers all on the light-emitting element, and the protective layer forms a laminating plane on the side facing away from the substrate, the shielding layer is arranged on the laminating plane, the cover layer is arranged on the shielding layer, and the shielding layer blocks the emission from the sides of each light-emitting element. light to improve display quality.

其中，保護層係由透明光學膠塗佈在發光元件上所形成的，其可為環氧樹脂(Epoxy)或矽氧烷樹脂(Silicone)，並可進一步添加提高折射率、減少變黃材料。Wherein, the protective layer is formed by coating the light-emitting element with transparent optical glue, which can be epoxy resin (Epoxy) or silicone resin (Silicone), and can further add materials to increase the refractive index and reduce yellowing.

其中，蓋板層係為透明玻璃、藍寶石玻璃或透明塑膠。Wherein, the cover layer is transparent glass, sapphire glass or transparent plastic.

其中，各發光元件係可為紅色迷你發光二極體、綠色迷你發光二極體及藍色迷你發光二極體，紅色迷你發光二極體、綠色迷你發光二極體及藍色迷你發光二極體係組成顯示裝置的其中一個像素。Among them, each light emitting element can be red mini LED, green mini LED and blue mini LED, red mini LED, green mini LED and blue mini LED The system constitutes one of the pixels of the display device.

其中，各發光元件與保護層之間於各發光單元的周圍係設有螢光單元。Wherein, a fluorescent unit is arranged around each light emitting unit between each light emitting element and the protection layer.

其中，各發光元件係可為藍光發光二極體，而螢光單元係可為黃色螢光粉，藍色發光二極體發出的藍光與黃色螢光粉發出的黃光互補形成白光。Wherein, each light-emitting element can be a blue light-emitting diode, and the fluorescent unit can be a yellow phosphor powder, and the blue light emitted by the blue light-emitting diode and the yellow light emitted by the yellow phosphor complement each other to form white light.

其中，各發光元件係為藍色發光二極體上，螢光單元係為綠色螢光粉層和紅色螢光粉層所組成，通過藍色發光二極體發出的藍光與綠色螢光粉發出的綠光、紅色螢光粉紅光複合得到白光。Among them, each light-emitting element is on a blue light-emitting diode, and the fluorescent unit is composed of a green phosphor layer and a red phosphor layer, and the blue light emitted by the blue light-emitting diode and the green phosphor are emitted. Green light and red fluorescent pink light are combined to obtain white light.

其中，各發光元件係為紫光發光二極體或紫外光發光二極體，螢光單元係為層疊的紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層組成，利用紫外光發光二極體的紫光或紫外光來激發紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層產生白光。Among them, each light-emitting element is a purple light-emitting diode or an ultraviolet light-emitting diode, and the fluorescent unit is composed of a stacked red phosphor layer, a green phosphor layer, and a blue-green phosphor layer. The purple light or ultraviolet light of the light-emitting diode excites the red phosphor, the green phosphor layer and the blue-green phosphor layer to generate white light.

其中，各發光元件與各螢光單元之間設有光學強化層，或者各螢光單元與遮蔽層之間設有光學強化層，光學強化層調整各發光元件的發光方向集中向正面朝上，並且可以提高亮度。Wherein, an optical strengthening layer is provided between each light-emitting element and each fluorescent unit, or an optical strengthening layer is provided between each fluorescent unit and the shielding layer, and the optical strengthening layer adjusts the light-emitting direction of each light-emitting element to focus on the front face upward, And can improve the brightness.

其中，遮蔽層係為穿透度為20~40%的黑色油墨，較佳者為穿透度為30%的黑色油墨。Wherein, the masking layer is a black ink with a penetration of 20-40%, preferably a black ink with a penetration of 30%.

據上所述，本發明的顯示裝置將可以有效的利用遮蔽層來阻擋相鄰的發光元件之間的光線互擾問題，同時使得其他沒有發光的區域達到黑化效果，藉以突顯出發光區域，而且本發明的顯示裝置只需要以簡單的塗佈製程，就可以在保護層與蓋板層之間設置遮蔽層，此種塗佈製程可以快速、大量且低成本的方式生產本發明。According to the above, the display device of the present invention can effectively use the shielding layer to block the light interference between adjacent light-emitting elements, and at the same time make other areas that do not emit light achieve a blackening effect, thereby highlighting the light-emitting area. Moreover, the display device of the present invention only needs a simple coating process to provide a shielding layer between the protective layer and the cover layer. This coating process can produce the present invention in a rapid, large-scale and low-cost manner.

為了使本發明的目的、技術方案及優點更加清楚明白，下面結合附圖及實施例，對本發明進行進一步詳細說明。應當理解，此處所描述的具體實施例僅用以解釋本發明，但並不用於限定本發明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

請參閱圖4所示，本發明係一種顯示裝置，包括基板2、複數個發光元件3、保護層4、遮蔽層5及蓋板層6，其中各發光元件3係設在基板2上，各發光元件3尤其是以陣列方式排列在基板2上，保護層4則是覆蓋在所有的發光元件3上，且保護層4在背對基板2的一面形成一貼合平面，遮蔽層5係設在貼合平面上，蓋板層6是設在遮蔽層5上，藉由遮蔽層5遮擋各發光元件3側面發出的光線，用以改善顯示品質。Please refer to FIG. 4, the present invention is a display device, including a substrate 2, a plurality of light-emitting elements 3, a protective layer 4, a shielding layer 5 and a cover layer 6, wherein each light-emitting element 3 is arranged on the substrate 2, each The light-emitting elements 3 are especially arranged on the substrate 2 in an array, the protective layer 4 covers all the light-emitting elements 3, and the protective layer 4 forms a bonding plane on the side facing away from the substrate 2, and the shielding layer 5 is set On the bonding plane, the cover layer 6 is disposed on the shielding layer 5, and the shielding layer 5 shields the light emitted from the side of each light emitting element 3 to improve the display quality.

在本發明中，保護層4保護發光元件3及維持最高的光通量、最少的光衰減，即是一般所稱之封裝材料所製作而成，主要為透明光學膠塗佈在發光元件3上，通常為環氧樹脂(Epoxy)或矽氧烷樹脂(Silicone)，並且因為環氧樹脂預熱或紫外光(UV)照射很容易逐漸變黃、老化， 進而影響顏色及穿透，尤其溫度越高或波長越低時老化速度越快，因此在透明光學膠中可進一步添加提高折射率、減少變黃材料，其中提高折射率的材料，例如：氧化奈米粉體，而氧化奈米粉體之材料可為氧化鈦(TiO 2)、氧化鋯(ZrO2)、五氧化二鉭(Ta2O5)或氧化鋅(ZnO) 等，而減少變黃材料係為四元硫醇硬化劑和含苯環的雙硫醇硬化劑。而蓋板層6係為透明玻璃、藍寶石玻璃或透明塑膠。又，遮蔽層5係為穿透度為20~40%的黑色油墨，較佳者為穿透度為30%的黑色油墨。 In the present invention, the protective layer 4 protects the light-emitting element 3 and maintains the highest luminous flux and the least light attenuation. It is epoxy resin (Epoxy) or silicone resin (Silicone), and it is easy to gradually turn yellow and age due to preheating of epoxy resin or ultraviolet (UV) irradiation, which will affect the color and penetration, especially when the temperature is higher or The lower the wavelength, the faster the aging speed. Therefore, materials that increase the refractive index and reduce yellowing can be further added to the transparent optical adhesive. Among them, materials that increase the refractive index, such as: oxidized nanopowder, and the material of oxidized nanopowder can be Titanium oxide (TiO 2 ), zirconium oxide (ZrO2), tantalum pentoxide (Ta2O5) or zinc oxide (ZnO), etc., and the yellowing reduction materials are tetrahydric mercaptan hardeners and dithiol hardeners containing benzene rings agent. The cover layer 6 is transparent glass, sapphire glass or transparent plastic. Moreover, the shielding layer 5 is black ink with a penetration of 20-40%, preferably a black ink with a penetration of 30%.

在本發明中，顯示裝置係可為直顯全彩顯示裝置，而各發光元件3係為紅色迷你發光二極體、綠色迷你發光二極體及藍色迷你發光二極體，且紅色迷你發光二極體、綠色迷你發光二極體及藍色迷你發光二極體係組成直顯全彩顯示裝置的其中一個像素，如此，直顯全彩顯示裝置的各發光元件3可以降低各發光元件3間的光線互擾問題。In the present invention, the display device can be a direct display full-color display device, and each light emitting element 3 is a red mini light emitting diode, a green mini light emitting diode and a blue mini light emitting diode, and the red mini light emitting diode One of the pixels of the direct-view full-color display device is composed of the diode, the green mini-light-emitting diode and the blue mini-light-emitting diode system. In this way, each light-emitting element 3 of the direct-view full-color display device can reduce the space between each light-emitting element 3 light interference problem.

在本發明中，顯示裝置係可為陣列顯示裝置或液晶顯示裝置的背光模組，各發光元件3與保護層4之間於各發光單元的周圍係設有一螢光單元7。In the present invention, the display device can be a backlight module of an array display device or a liquid crystal display device, and a fluorescent unit 7 is provided between each light emitting element 3 and the protective layer 4 around each light emitting unit.

在本發明之一實施例中，各發光元件3係可為藍光發光二極體，而螢光單元7係可為黃色螢光粉，藍色發光二極體發出的藍光與黃色螢光粉發出的黃光互補形成白光。In one embodiment of the present invention, each light-emitting element 3 can be a blue light-emitting diode, and the fluorescent unit 7 can be a yellow phosphor, and the blue light emitted by the blue light-emitting diode and the yellow phosphor emit light. The yellow light complements each other to form white light.

在本發明之另一實施例中，各發光元件3係為藍色發光二極體上，螢光單元7係為綠色螢光粉層和紅色螢光粉層所組成，通過藍色發光二極體發出的藍光與綠色螢光粉發出的綠光、紅色螢光粉紅光複合得到白光。In another embodiment of the present invention, each light-emitting element 3 is on a blue light-emitting diode, and the fluorescent unit 7 is composed of a green phosphor layer and a red phosphor layer. The blue light emitted by the body is combined with the green light emitted by the green fluorescent powder and the pink light emitted by the red fluorescent powder to obtain white light.

在本發明之又另一實施例中，各發光元件3係為紫光發光二極體或紫外光發光二極體，螢光單元7係為層疊的紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層組成，利用紫外光發光二極體的紫光或紫外光來激發紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層產生白光，其中紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層的層疊順序部限定，只要是三個層疊包括有紅色螢光粉、綠色螢光粉層及藍色綠色螢光粉層即可。In yet another embodiment of the present invention, each light-emitting element 3 is a purple light-emitting diode or an ultraviolet light-emitting diode, and the fluorescent unit 7 is a laminated red phosphor layer, a green phosphor layer, and a blue phosphor layer. Composed of green fluorescent powder layer, the red fluorescent powder, green fluorescent powder layer and blue-green fluorescent powder layer are excited by the ultraviolet light or ultraviolet light of the ultraviolet light-emitting diode to produce white light, in which the red fluorescent powder, green fluorescent powder The stacking sequence of the phosphor layer and the blue-green phosphor layer is partially limited, as long as there are three stacks including the red phosphor layer, the green phosphor layer and the blue-green phosphor layer.

為了能夠更進一步的減少光線互擾的問題，或者是減少遮蔽層5降低亮度的問題，在各實施例中，各發光元件3與各螢光單元7之間設有光學強化層8，或者各螢光單元7與遮蔽層5之間設有光學強化層8，光學強化層8調整各發光元件3的發光方向集中向正面朝上，並且可以提高亮度。In order to further reduce the problem of mutual interference of light, or the problem of reducing the brightness of the shielding layer 5, in each embodiment, an optical strengthening layer 8 is provided between each light emitting element 3 and each fluorescent unit 7, or each An optical strengthening layer 8 is provided between the fluorescent unit 7 and the shielding layer 5 , and the optical strengthening layer 8 adjusts the light emitting direction of each light emitting element 3 to focus on the front side upward, and can improve brightness.

據上所述，本發明有效的利用遮蔽層5來阻擋相鄰的發光元件3之間的光線互擾問題，同時使得其他沒有發光的區域達到黑化效果，藉以突顯出發光區域，另外本發明可以進一步利用光學強化層8來增強發光元件3的光線往正面朝上集中，用以減少遮蔽層5降低亮度的問題，除此之外，最重要的是，本發明的遮蔽層5只需要以簡單的塗佈製程，就可以被設置在保護層4與蓋板層6之間，此種塗佈製程可以快速、大量且低成本的方式生產本發明，解決了先前技術的問題。According to the above, the present invention effectively uses the shielding layer 5 to block the light interference between adjacent light-emitting elements 3, and at the same time makes other areas that do not emit light achieve a blackening effect, thereby highlighting the light-emitting area. In addition, the present invention The optical strengthening layer 8 can be further used to enhance the concentration of the light of the light-emitting element 3 toward the front, so as to reduce the problem that the shading layer 5 lowers the brightness. In addition, the most important thing is that the shading layer 5 of the present invention only needs to use A simple coating process can be arranged between the protective layer 4 and the cover layer 6. This coating process can produce the present invention in a fast, mass and low-cost manner, and solves the problems of the prior art.

上列詳細說明係針對本發明的可行實施例之具體說明，惟前述的實施例並非用以限制本發明之專利範圍，凡未脫離本發明技藝精神所為之等效實施或變更，均應包含於本案之專利範圍中。The above detailed description is a specific description of the feasible embodiments of the present invention, but the foregoing embodiments are not intended to limit the patent scope of the present invention, and any equivalent implementation or change that does not depart from the technical spirit of the present invention should be included in In the patent scope of this case.

10、2:基板 12、3:發光元件 14、7:螢光單元 16、4:保護層 18、6:蓋板層 19:黑色光學膠 5:遮蔽層 8:光學強化層 10. 2: Substrate 12. 3: Light-emitting components 14, 7: Fluorescence unit 16. 4: Protective layer 18. 6: Cover layer 19: Black optical glue 5: masking layer 8: Optical strengthening layer

圖1為傳統陣列顯示裝置之剖面示意圖。 圖2為另一傳統陣列顯示裝置之剖面示意圖。 圖3為又另一傳統陣列顯示裝置之剖面示意圖。 圖4為本發明之一實施例之剖面示意圖。 圖5為本發明之另一實施例之剖面示意圖。 FIG. 1 is a schematic cross-sectional view of a conventional array display device. FIG. 2 is a schematic cross-sectional view of another conventional array display device. FIG. 3 is a schematic cross-sectional view of yet another conventional array display device. Fig. 4 is a schematic cross-sectional view of an embodiment of the present invention. Fig. 5 is a schematic cross-sectional view of another embodiment of the present invention.

2:基板 2: Substrate

3:發光元件 3: Light emitting element

4:保護層 4: Protective layer

5:遮蔽層 5: masking layer

6:蓋板層 6: Cover layer

7:螢光單元 7: Fluorescence unit

Claims (10)

一種顯示裝置，包括： 一基板； 複數個發光元件，各發光元件係設置在基板上； 一保護層，該保護層係覆蓋在所有的發光元件上，且該保護層在背對該基板的一面形成一貼合平面； 一遮蔽層，該遮蔽層係設在該貼合平面上，該遮蔽層遮掩各該發光元件互相光擾的光源；及 一蓋板層，該蓋板層是設在該遮蔽層上。 A display device comprising: a substrate; A plurality of light-emitting elements, each light-emitting element is arranged on the substrate; A protective layer, the protective layer covers all the light-emitting elements, and the protective layer forms a bonding plane on the side facing away from the substrate; a shielding layer, the shielding layer is arranged on the bonding plane, and the shielding layer shields the light sources that each light-emitting element interferes with each other; and A cover layer, the cover layer is arranged on the shielding layer. 如請求項1所述的顯示裝置，其中該保護層係由透明光學膠塗佈在各該發光元件上所形成的。The display device according to claim 1, wherein the protective layer is formed by coating each of the light emitting elements with a transparent optical glue. 如請求項1所述的顯示裝置，其中該蓋板層係為透明玻璃、藍寶石玻璃或透明塑膠。The display device according to claim 1, wherein the cover layer is transparent glass, sapphire glass or transparent plastic. 如請求項1所述的顯示裝置，其中各該發光元件係分別包括一紅色迷你發光二極體、一綠色迷你發光二極體及一藍色迷你發光二極體，該紅色迷你發光二極體、該綠色迷你發光二極體及該藍色迷你發光二極體係組成該顯示裝置的其中一個像素。The display device as described in claim 1, wherein each of the light-emitting elements includes a red mini-LED, a green mini-LED and a blue mini-LED, and the red mini-LED , the green mini LED and the blue mini LED system constitute one pixel of the display device. 如請求項1所述的顯示裝置，其中各該發光元件與該保護層之間於各該發光單元的周圍係設有一螢光單元。The display device according to claim 1, wherein a fluorescent unit is arranged around each light emitting unit between each light emitting element and the protective layer. 如請求項5所述的顯示裝置，其中各該發光元件係可為一藍光發光二極體，而該螢光單元係可為黃色螢光粉，該藍色發光二極體發出的藍光與該黃色螢光粉發出的黃光互補形成白光。The display device as described in Claim 5, wherein each of the light-emitting elements can be a blue light-emitting diode, and the fluorescent unit can be a yellow phosphor, and the blue light emitted by the blue light-emitting diode and the blue light emitted by the blue light-emitting diode The yellow light emitted by the yellow phosphor complements each other to form white light. 如請求項5所述的顯示裝置，其中各該發光元件係為一藍色發光二極體上，該螢光單元係為一綠色螢光粉層和一紅色螢光粉層所組成，該藍色發光二極體發出的藍光與該綠色螢光粉發出的綠光、該紅色螢光粉紅光複合得到白光。The display device as described in Claim 5, wherein each of the light-emitting elements is on a blue light-emitting diode, and the fluorescent unit is composed of a green phosphor layer and a red phosphor layer, and the blue The blue light emitted by the color light-emitting diode is combined with the green light emitted by the green fluorescent powder and the red fluorescent pink light to obtain white light. 如請求項5所述的顯示裝置，其中各該發光元件係為一紫光發光二極體或一紫外光發光二極體，該螢光單元係為層疊的一紅色螢光粉、一綠色螢光粉層及一藍色綠色螢光粉層組成，該紫外光發光二極體的紫光或紫外光來激發該紅色螢光粉、該綠色螢光粉層及該藍色綠色螢光粉層產生白光。The display device as described in Claim 5, wherein each of the light-emitting elements is a purple light-emitting diode or an ultraviolet light-emitting diode, and the fluorescent unit is a stacked red phosphor, a green fluorescent Composed of a powder layer and a blue-green phosphor layer, the purple or ultraviolet light of the ultraviolet light-emitting diode excites the red phosphor, the green phosphor layer and the blue-green phosphor layer to produce white light . 如請求項5所述的顯示裝置，其中各該發光元件與各該螢光單元之間設有一光學強化層，或者各該螢光單元與該遮蔽層之間設有一光學強化層，該光學強化層調整各該發光元件的發光方向集中向正面朝上，並且可以提高亮度。The display device according to claim 5, wherein an optical strengthening layer is provided between each of the light-emitting elements and each of the fluorescent units, or an optical strengthening layer is provided between each of the fluorescent units and the shielding layer, and the optical strengthening The layer adjusts the light-emitting direction of each light-emitting element to focus on the front face upward, and can improve the brightness. 如請求項1所述的顯示裝置，其中各遮蔽層係為穿透度為20~40%的黑色油墨。The display device according to claim 1, wherein each masking layer is black ink with a penetration of 20-40%.
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JP7284373B2 (en) * 2018-12-28 2023-05-31 日亜化学工業株式会社 light emitting device

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