TW201520648A - Display panel and the manufacturing method thereof - Google Patents
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- G—PHYSICS
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
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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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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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Abstract
Description
本發明涉及一種顯示面板及其製作方法，尤指一種具有藍光濾除效果的顯示面板及其製作方法。 The invention relates to a display panel and a manufacturing method thereof, in particular to a display panel with a blue filtering effect and a manufacturing method thereof.
隨著電子產品的日益普及，關於長期使用電子產品會不會損害健康的爭論就沒有停息過。而爭論與研究的焦點大部分集中在電子產品中顯示面板的輻射問題上。 With the increasing popularity of electronic products, the debate over whether long-term use of electronic products will harm health has not stopped. Most of the focus of debate and research has focused on the radiation of display panels in electronic products.
目前LCD與OLED技術的日益完善，已經逐漸替代了原有的CRT顯示器。相比CRT顯示器來說，LCD與OLED釋放的輻射會相對小很多。但是，LCD與OLED面板的輻射對於人眼的傷害問題仍然沒有得到很好的解決。 At present, LCD and OLED technology are increasingly perfect, and have gradually replaced the original CRT display. Compared to CRT displays, the radiation emitted by LCDs and OLEDs is much smaller. However, the radiation damage of the LCD and OLED panels has not been well solved for the human eye.
可見光也是電磁波的一種，而電磁波就是電磁輻射。因而，廣義上講，可見光也就是一種電磁輻射，只是通常認為，可見光對人體危害不大。可見光是指電磁波譜中波長約在390~760納米範圍內且為肉眼可見的電磁輻射。在各種可見光中，藍光的波長在400~500納米(nanometer；nm)之間，科學研究證實：視網膜細胞含有一種異常的視黃醛，英文名叫A2E。A2E有兩個吸收峰，一個在紫外區的335nm，另一個在藍光區的435nm。A2E對視網膜色素上皮在沒有光照黑暗的條件 下具有毒性。在光照條件下其毒性大大地增加。目前最流行LCD與OLED的光源中含有異常的高能短波藍光。所謂高能短波藍光，目前的理解就是，位於A2E吸收峰的波長在435nm~440nm的高強度高亮度的藍光。 Visible light is also a kind of electromagnetic wave, and electromagnetic wave is electromagnetic radiation. Therefore, in a broad sense, visible light is also an electromagnetic radiation, but it is generally believed that visible light is not harmful to the human body. Visible light refers to electromagnetic radiation in the electromagnetic spectrum with a wavelength in the range of about 390-760 nm and visible to the naked eye. Among various visible light, the wavelength of blue light is between 400 and 500 nanometers (nanometer; nm). Scientific research has confirmed that retinal cells contain an abnormal retinal, and the English name is A2E. A2E has two absorption peaks, one at 335 nm in the ultraviolet region and the other at 435 nm in the blue region. A2E on the retinal pigment epithelium in the absence of light dark conditions It is toxic. Its toxicity is greatly increased under light conditions. At present, the most popular LCD and OLED light sources contain abnormal high-energy short-wave blue light. The so-called high-energy short-wave blue light, the current understanding is that the A2E absorption peak wavelength is between 435nm ~ 440nm high-intensity high-brightness blue light.
高能短波藍光對視網膜的損害作用，第一步是由於A2E在藍光區有吸收峰，所以高能短波藍光能激發使其釋放出自由基離子。第二步是這些自由基離子增大了它對視網膜色素上皮的損壞作用從而引起視網膜色素上皮的萎縮，再引起光敏感細胞的死亡。光敏感細胞的功能是接受入射光把光信號轉變為電信號，後者再通過視覺神經傳遞給大腦後成像。光敏感細胞的死亡將會導致視力逐漸下降甚至完全喪失。 The first step of high-energy short-wave blue light has an absorption peak in the blue region due to the damage of high-energy short-wave blue light to the retina. Therefore, high-energy short-wave blue light can excite it to release free radical ions. The second step is that these free radical ions increase its damage to the retinal pigment epithelium and cause atrophy of the retinal pigment epithelium, which in turn causes death of light-sensitive cells. The function of light-sensitive cells is to accept the incident light to convert the light signal into an electrical signal, which is then transmitted to the brain through the visual nerve for imaging. The death of light-sensitive cells will lead to a gradual decline or even complete loss of vision.
因此，目前的顯示面板技術確實尚有進一步改進的必要。 Therefore, the current display panel technology does have the need for further improvement.
本發明要解決的技術問題在於：提供一種新型的顯示面板，用於避免其產生高能短波藍光對人眼造成傷害。 The technical problem to be solved by the present invention is to provide a novel display panel for preventing high-energy short-wave blue light from causing damage to the human eye.
為解決上述技術問題，本發明公開了一種顯示面板，包括玻璃基板、玻璃面板以及夾設於該玻璃基板與玻璃面板之間的發光單元，其中：該發光單元中藍光發光材料的出光方向上設置有一用於濾去預設波段範圍(如440nm)藍光的濾光層。 In order to solve the above technical problem, the present invention discloses a display panel comprising a glass substrate, a glass panel, and a light emitting unit interposed between the glass substrate and the glass panel, wherein: the light emitting unit is disposed in a light emitting direction of the blue light emitting material One is used to filter out the preset band range (eg 440 nm) blue light filter layer.
透過該濾光層對顯示面板中藍光發光材料發射產生的藍光進行預設波段範圍的濾除，從而避免小於某一預設波長(例如440nm)的 高能短波藍光對人眼造成傷害。 The blue light generated by the blue light emitting material in the display panel is filtered by the filter layer through a predetermined wavelength range, thereby avoiding less than a predetermined wavelength (for example, 440 nm). High-energy short-wave blue light causes damage to the human eye.
本發明的進一步改進在於，該顯示面板為LCD顯示面板、OLED顯示面板或任何適切的面板。 A further improvement of the invention is that the display panel is an LCD display panel, an OLED display panel or any suitable panel.
本發明的進一步改進在於，該濾光層為一製作於該玻璃面板正面或背面的帶通濾光層。 A further improvement of the invention is that the filter layer is a band pass filter layer formed on the front or back side of the glass panel.
本發明的進一步改進在於，該帶通濾光層為使用例如是蒸鍍或濺射於玻璃面板的多層介質膜，或者為旋塗於玻璃面板的藍色光阻。 A further improvement of the present invention is that the band pass filter layer is a multilayer dielectric film using, for example, evaporation or sputtering on a glass panel, or a blue photoresist spin-coated on a glass panel.
本發明還公開了一種製作顯示面板的方法，該製作方法包括以下步驟：透過在該顯示面板的發光單元中藍光發光材料的出光方向上設置一濾光層，用於濾去某一預設波段範圍內的藍光。 The invention also discloses a method for manufacturing a display panel, the manufacturing method comprising the steps of: setting a filter layer in a light-emitting direction of the blue light-emitting material in the light-emitting unit of the display panel, for filtering a predetermined wavelength band Blue light in the range.
本發明的進一步改進在於，該顯示面板為LCD顯示面板。 A further improvement of the present invention is that the display panel is an LCD display panel.
本發明的進一步改進在於，該顯示面板為OLED顯示面板。 A further improvement of the present invention is that the display panel is an OLED display panel.
本發明的進一步改進在於，透過在該顯示面板的玻璃面板的正面或背面製作一帶通濾光層，用於濾去某一預設波段範圍內的藍光。 A further improvement of the present invention is to form a band pass filter layer on the front or back side of the glass panel of the display panel for filtering blue light in a predetermined range of wavelengths.
本發明的進一步改進在於，透過在該玻璃面板上使用例如是蒸鍍或濺射多層介質膜從而形成該帶通濾光層，或者透過在該玻璃面板上旋塗藍色光阻從而形成該帶通濾光層。 A further improvement of the present invention is that the band pass filter layer is formed by using, for example, vapor deposition or sputtering of a multilayer dielectric film on the glass panel, or the band pass is formed by spin coating a blue photoresist on the glass panel. Filter layer.
10‧‧‧玻璃基板 10‧‧‧ glass substrate
20‧‧‧玻璃面板 20‧‧‧glass panel
21‧‧‧帶通濾光層 21‧‧‧Bandpass filter
30‧‧‧發光單元 30‧‧‧Lighting unit
31‧‧‧薄膜電晶體 31‧‧‧film transistor
32‧‧‧發光結構層 32‧‧‧Lighted structural layer
321‧‧‧藍光發光材料 321‧‧‧Blue light luminescent material
第1圖 為本發明中顯示面板的第一較佳實施方式結構示意圖；第2圖 為本發明中顯示面板的第二較佳實施方式結構示意圖。 1 is a schematic structural view of a first preferred embodiment of a display panel of the present invention; and FIG. 2 is a schematic structural view of a second preferred embodiment of the display panel of the present invention.
為清楚描述本發明的結構及工作原理，以下結合附圖和較佳的具體實施例對本發明作進一步說明。 The present invention will be further described in conjunction with the accompanying drawings and preferred embodiments.
首先以OLED面板為例，請參見第1圖所示，為本發明中OLED顯示面板的第一較佳實施方式結構示意圖，其主要包括一玻璃基板10，一玻璃面板20以及夾設於玻璃基板10與玻璃面板20之間的發光單元30，該發光單元30主要包括用於驅動的薄膜電晶體31(TFT)以及用於發光的發光結構層32，該發光結構層32又進一步包括陽極(ITO)、空穴傳輸層(HTL)、發光層(EL)、電子傳輸層(ETL)以及陰極(Cathode)等。當電力供應至適當電壓時，正極空穴與陰極電荷就會在發光層中結合，產生光亮，依其配方不同產生紅、綠和藍RGB三原色，構成基本色彩。關於OLED面板的驅動以及發光原理為公知技術，故在此不再展開贅述。 First, an OLED panel is taken as an example. Referring to FIG. 1 , it is a schematic structural view of a first preferred embodiment of an OLED display panel according to the present invention. The method mainly includes a glass substrate 10 , a glass panel 20 , and a glass substrate . a light-emitting unit 30 between the glass panel 20 and the glass panel 20, the light-emitting unit 30 mainly comprising a thin film transistor 31 (TFT) for driving and a light-emitting structure layer 32 for light-emitting, the light-emitting structure layer 32 further comprising an anode (ITO) ), a hole transport layer (HTL), a light-emitting layer (EL), an electron transport layer (ETL), and a cathode (Cathode). When the power is supplied to an appropriate voltage, the positive hole and the cathode charge are combined in the light-emitting layer to produce light, and the three primary colors of red, green and blue RGB are generated according to the formulation to form a basic color. Regarding the driving of the OLED panel and the principle of illumination are well-known techniques, no further description is provided herein.
本發明的第一較佳實施方式結構中，在顯示面板的發光單元30中藍光發光材料321的出光方向上設置一帶通濾光層21，透過該帶通濾光層濾去藍光發光材料321發射波長中的短波部分，使得波長小於某一預設值的光子不能通過，從而避免了高強度高亮度的藍光對人眼的傷害。在本實施例中，該帶通濾光層21直接製作於玻璃面板的背面，該製作方法可以選擇蒸鍍或濺射多層介質膜，也可以選擇旋塗藍色光阻。 In the first preferred embodiment of the present invention, a band pass filter layer 21 is disposed in the light emitting direction of the blue light emitting material 321 in the light emitting unit 30 of the display panel, and the blue light emitting material 321 is filtered through the band pass filter layer. The short-wave part of the wavelength makes the photon whose wavelength is less than a certain preset value cannot pass, thereby avoiding the damage of the high-intensity and high-brightness blue light to the human eye. In this embodiment, the band pass filter layer 21 is directly formed on the back surface of the glass panel. The manufacturing method may be selected by vapor deposition or sputtering of a multilayer dielectric film, or may be selected by spin coating a blue photoresist.
首先，使用例如是蒸鍍或濺射的多層介質膜技術是利用多入射光的衍射，使得波長在某一預設範圍內的光能通過，而其它波長的光被反射，因而可調整藍光發光材料的反射光譜，濾掉短波光子。例如：藍光器件發射光譜範圍為400nm~500nm，峰值波為460nm，如通過一440~500nm 範圍的帶通濾光片後，其光譜範圍變為440~500nm，純化了光譜，濾除了有害的短波。該440~500nm帶通濾光片多層鍍膜結構可選為：HLH2LHLHLHLH2LHLH，共15層，其中L和H分別代表厚度為1/4波長的低折射率層和高折射率層，該帶通濾光片的中心波長為470nm，故對應厚度為117.5nm；2L則代表厚度為1/2波長的低折射率層，該帶通濾光片的中心波長為470nm，故對應厚度為235nm。其中該案例中的低折射率層可選用SiO2(折射率n=1.45)，高折射率層可選用TiO2(折射率n=2.3)。其它可實現同一功能的多層膜結構也可用於該案例中。 First, the use of a multilayer dielectric film technique such as evaporation or sputtering utilizes diffraction of multiple incident light such that light having a wavelength within a predetermined range passes, while light of other wavelengths is reflected, thereby adjusting blue light emission. The reflection spectrum of the material filters out short-wave photons. For example, the emission spectrum of a blue light device ranges from 400 nm to 500 nm, and the peak wave is 460 nm. After passing through a bandpass filter in the range of 440-500 nm, the spectral range becomes 440-500 nm, the spectrum is purified, and harmful short-waves are filtered out. . The 440-500 nm band pass filter multi-layer coating structure can be selected as: HLH2LHLHLHLH2LHLH, a total of 15 layers, wherein L and H respectively represent a low refractive index layer and a high refractive index layer having a thickness of 1/4 wavelength, the band pass filter The center wavelength of the sheet is 470 nm, so the corresponding thickness is 117.5 nm; 2L represents a low refractive index layer having a thickness of 1/2 wavelength, and the center wavelength of the band pass filter is 470 nm, so the corresponding thickness is 235 nm. In the case, the low refractive index layer may be selected from SiO 2 (refractive index n = 1.45), and the high refractive index layer may be selected from TiO 2 (refractive index n = 2.3). Other multilayer film structures that achieve the same function can also be used in this case.
其次，藍色光阻的製作可採用顏料分散法，類似半導體的黃光微影制程，首先將顏料分散型彩色光阻塗布於玻璃面板上，經光阻預烤(Pre-bake)，曝光對準(Aligned)，顯影(Developed)，光阻剝離(Stripping)，硬烤(Post-bake)等流程製成該藍色光阻。方案所涉及藍色光阻(Photo Resist)是一種感光材料，廣泛被使用在半導體及TFT-LCD面板生產線的微影制程，主要成分包括光阻顏料、樹脂、溶劑及其它添加劑；其中樹脂幫助顏料的分散及對玻璃面板的附著，並提供彩色光阻的機械強度，溶劑決定塗布及成膜性質，其它添加劑使彩色光阻達到理想的牛頓流體。該案例中，如藍光器件發射光譜範圍為400nm~500nm，峰值波為460nm，則選擇透過波段範圍為440~500nm的藍色光阻可修飾其發射光譜，濾除有害短波。 Secondly, the blue photoresist can be fabricated by pigment dispersion method, similar to the semiconductor yellow light lithography process, firstly coating the pigment dispersion type color photoresist on the glass panel, pre-bake through the photoresist, and aligning the exposure. The developed, developed, stripped, and post-bake processes produce the blue photoresist. The photo resist is a photographic material widely used in the lithography process of semiconductor and TFT-LCD panel production lines. The main components include photoresist, resin, solvent and other additives. Dispersion and adhesion to the glass panel, and provide the mechanical strength of the color photoresist, the solvent determines the coating and film forming properties, and other additives make the color photoresist to the ideal Newtonian fluid. In this case, if the blue-light device emits in the spectral range from 400 nm to 500 nm and the peak wave is 460 nm, the blue photoresist with a transmission range of 440-500 nm can be modified to modify its emission spectrum and filter out harmful short-waves.
再請參閱圖2所示，本發明中顯示面板的第二較佳實施例方式結構示意圖，其結構大致與上述的第一較佳實施例相同，區別在於將帶通濾光層21直接製作於玻璃面板的正面且其面積是大於該藍光發光材料321。具體實施方案與第一較佳實施案例相同。 Referring to FIG. 2, a schematic structural view of a second preferred embodiment of the display panel of the present invention is substantially the same as the first preferred embodiment described above, except that the band pass filter layer 21 is directly formed on The front side of the glass panel and its area is larger than the blue light emitting material 321 . The specific embodiment is the same as the first preferred embodiment.
進一步的，當適用於LCD顯示面板時，同樣可以使用上述方案在LCD顯示面板玻璃製作帶通濾光層，起到濾除對人眼有害的特定波段藍光的效果。 Further, when applied to an LCD display panel, the above-described scheme can also be used to fabricate a band pass filter layer on the LCD display panel glass to filter out a specific band of blue light harmful to the human eye.
以上結合附圖實施例對本發明進行了詳細說明，本領域中普通技術人員可根據上述說明對本發明做出種種變化例。因而，實施例中的某些細節不應構成對本發明的限定，本發明將以所附權利要求書界定的範圍作為本發明的保護範圍。 The present invention has been described in detail above with reference to the embodiments of the drawings, and various modifications of the invention can be made by those skilled in the art in light of the above description. Therefore, some of the details of the embodiments are not to be construed as limiting the scope of the invention, which is defined by the appended claims.
10‧‧‧玻璃基板 10‧‧‧ glass substrate
20‧‧‧玻璃面板 20‧‧‧glass panel
21‧‧‧帶通濾光層 21‧‧‧Bandpass filter
30‧‧‧發光單元 30‧‧‧Lighting unit
31‧‧‧薄膜電晶體 31‧‧‧film transistor
32‧‧‧發光結構層 32‧‧‧Lighted structural layer
321‧‧‧藍光發光材料 321‧‧‧Blue light luminescent material
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| WO2017113042A1 (en) * | 2015-12-31 | 2017-07-06 | 林伯刚 | Blue light harm-reducing device and method thereof |
| CN108663853B (en) * | 2018-04-25 | 2022-03-25 | 昆山龙腾光电股份有限公司 | Liquid crystal display panel, liquid crystal display device and manufacturing method of liquid crystal display panel |
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| US7091523B2 (en) * | 2004-05-13 | 2006-08-15 | Eastman Kodak Company | Color OLED device having improved performance |
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| CA2670789C (en) * | 2006-11-28 | 2016-06-07 | Andrew W. Ishak | High performance selective light wavelength filtering providing improved contrast sensitivity |
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| KR20100075746A (en) * | 2008-12-25 | 2010-07-05 | 후지필름 가부시키가이샤 | Display device |
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| EP2602653B1 (en) * | 2011-12-08 | 2020-09-16 | Essilor International | Method of determining the configuration of an ophthalmic filter |
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