TWI226486B - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
TWI226486B
TWI226486B TW092112334A TW92112334A TWI226486B TW I226486 B TWI226486 B TW I226486B TW 092112334 A TW092112334 A TW 092112334A TW 92112334 A TW92112334 A TW 92112334A TW I226486 B TWI226486 B TW I226486B
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Taiwan
Prior art keywords
liquid crystal
crystal display
display device
impact
plate
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TW092112334A
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Chinese (zh)
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TW200307833A (en
Inventor
Miyuki Owada
Hideaki Nagakubo
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Alps Electric Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50Protective arrangements
    • G02F2201/503Arrangements improving the resistance to shock

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

To obtain a liquid crystal display with excellent impact resistance even when the display is made thin and light-weight. A liquid crystal display unit 1 including a liquid crystal panel 15 is housed in a frame member 2 with a picture display face S exposed. The frame member has a base plate 22 opposed to a non-display face B of the liquid crystal display unit 1. An opening part 23 is formed on the base plate 22. A buffer member 18 is loaded on the non-display face B of the liquid crystal display unit, which can be inserted into the opening part 23 of the base plate.

Description

1226486 玖、發明說明: 【發明所屬之技術領域】 本發明關於耐衝擊性優異的液晶顯示裝置。 【先前技術】 一般’液晶顯示裝置具有:液晶顯示部件、用於對該液 晶顯不邵件輸入驅動信號的驅動電路、把它們保持一體的 殼體構件。液晶顯示部件基本上由在兩塊玻璃基板間密封 入液3曰組成物而構成的液晶面板、貼在所述玻璃基板的外 側面上的偏振片、相位差板等構成。除了它,當液晶顯示 部件為透射型或半透射型時,有時在液晶面板的背面(非顯 示面)上安裝背光裝置,另外,當液晶顯示部件為反射型時 ’在液晶面板的表面上安裝了前光裝置,或在液晶顯示部 件内安裝了反射板。如果在行動電話和PDA(pers〇nal digital assistant、攜帶型資訊終端)等小型儀器中使用這樣 結構的液晶顯示部件,則為了儀器全體的薄型化、輕型化 ’就對所述液晶面板中使用的玻璃基板和殼體構件也要求 極度的薄型化、輕型化。例如,所述玻璃基板的板厚以往 是Μ mm〜0.7 mm左右,但是現在薄到〇 55mm〜〇 5 mm左右 ’或根據情形’達到〇·4 mm左右的厚度。 【發明内容】 (發明要解決的課題) 如上所述,如果構件極度薄型化、輕型化,則由於儀器 的處理、攜帶時的機械彎曲、衝擊等,會發生液晶面板和 殼體構件容易破損的問題。特別是在行動電話和pDA等行動 84736-930625.doc 1226486 儀洛中,考慮到在攜帶時,誤掉到路面和地板上,戋重物 落到儀杏之上等事故。因此,在薄型、輕型的行動儀器中 使用的液晶顯示裝置中,要求更進一步的耐衝擊性。另外 ,其他問題有··會發生由於落下時等的衝擊,在液晶面板 内會產生氣泡的問題。這被認為是溶解於液晶組成物種的 氣體成分例如空氣由於衝擊引起的劇烈壓力變動而氣化而 引起的現象。 為了改善薄型液晶顯示裝置的耐衝擊性,從以往開始, 就提出了 :例如具有液晶面板、搭載了驅動電路的電路板 、通過包含導電性橡膠把這兩者固定在給定相對位置上的 金屬框架的液晶顯示裝置;或者,由液晶面板、安裝了驅 動電路的可撓性基板、覆蓋兩者而配置的框架構成,可撓 性基板與液晶面板的電極端子排列面成一平面,在其連接 器和框架之間設置了緩衝材料的液晶顯示裝置。可是,這 些都是要從衝擊中保護液晶面板的電極端子和可撓性基板 的電極端子的連接部,據此,可以說也保護了液晶面板自 身,但疋對極度薄型化的液晶面板的破損和氣泡的發生卻 無法期待效果。本發明是為了解決所述課題而提出的,因 此,其目的在於·提供即使薄型化、輕型化,也具有優異 的耐衝擊性的液晶顯示裝置。 (解決課題的手段) 為了解決所述課題,本發明提供液晶顯示裝置··包含在 兩塊基板間被封了液晶組成物的液晶面板的液晶顯示部件 被收藏在殼體構件中,其—者的面作為圖像顯示面,另一 84736-930625.doc 1226486 者的面作為非顯示面;所述殼體構件具有與所述液晶顯示 #件的非_不面相對的底板,在該底板的一部分上形成了 開口 α卩’在所述液晶顯示部件的所述非顯示面上安裝了插 入所述底板的開口部中的緩衝構件。 一般,基於液晶面板的衝擊的破損和氣泡的發生是由外 π傳來的衝擊引起σ在本發明的所述液晶顯示裝置中,因 為在液晶顯示部件的非顯示面一侧安裝了緩衝構件,所以 該緩衝構件吸收傳遞到液晶面板的非顯示面一側的衝擊波 ,能有效防止破損和氣泡的發生。這時,如果只在非顯示 面-側安裝了厚的緩衝構件,則單是緩衝構件的厚度就增 大了液叩頒示裝置全體的厚度,無法滿足薄型化的要求。 在本發明中,以為緩衝構件被插入形成在殼體構件的底板 的開口邵中’所以由於緩衝構件的安裝,丨會增大液晶顯 示裝置全體的厚度。 所述緩衝構件由板狀的高分子泡沫體構成,並且該緩衝 構件的厚度與所述殼體構件的底板厚度相等或它以下一 錢構件為高分子泡泳體時,希望包含在高分子泡沫體; 的孔泡的平均直徑為i 5 "m〜6〇 _的範圍内。另外,希访 所述緩衝構件中,壓縮負載(壓縮速度1〇 ,壓縮; 25%)在 0.6 kg/cm2〜〇·〇2 kg/cm2%^ 阁 w 、 g/cm的靶圍内,並且壓縮永久變 形(依據JIS-K6401)在0.5%〜5.0%的範圍内。 探索了能有效吸收在液 的衝擊的緩衝構件的特性 永久變形特性是重要的, 晶面板中引起破損和氣泡的發生 ,結果得知壓縮負裁特性和壓縮 特別是當這些特性在所述的數值 84736-930625.doc 1226486 範圍内時,取得了有效的緩衝效果。作為滿足該特性的材 料,列舉了高分子泡沐體。作為適用於本發明的高分子泡 沫體的例+,例如能列舉聚笨乙缔、聚亞胺酉旨、聚乙缔或 軟質聚氯乙烯等泡沫體。特別是聚乙烯和聚亞胺酯的泡沫 體的壓縮永久變形低,在適合的數值繼,效果很好。 1茨高分子泡沫體形成板狀或薄板狀’其厚度如果與殼體構 件的底板厚度相等或其以下,則在液晶顯示部件收藏在殼 體構件中的狀態下,緩衝構件不會從殼體構件的底板向外 側伸出,得以從外部應力受到保護。 本發明提供液晶顯示裝置’其中:可撓性基板連接在所 述液晶面板的周邊部,所述可撓性基板沿著伸出到所述殼 體構件外部一側的該殼體構件的外側面彎曲,添加在所1 殼體構件的背面一側,覆蓋在所述底板的開口部一側,在 所述可撓性基板中,在對於所述開口部的位置,搭載了電 路元件。這時,1C晶片等電路元件配置在可撓性基板上的 覆蓋所述開口部的位置的外側面。 如果可撓性基板沿著殼體構件的外側蔓延,覆蓋所述底 板的開口部,1C晶片等電路元件配置在可撓性基板上的所 述開口邵外側,則當液晶顯示裝置落下時,即使電路構件 要衝擊液晶面板的背面一側,緩衝構件也緩和了衝擊。 本發明提供液晶顯示裝置,其中··所述液晶顯示部件的 圖像顯示面和所述殼體構件的上表面大致為一個面,其邊 界由衝擊吸收薄板覆蓋。 如果由於落下等使彳于液晶顯示裝置的側部受到衝擊,則 84736-930625.doc 1226486 衝擊應力的一部分從殼體構件的邊緣傳遞到與該邊緣解除 的液晶顯示部件的邊部,有時會引起液晶面板等的破損。 如果使所述液晶顯示部件的圖像顯示面和所述殼體構件的 上表面為一個面,其邊界由衝擊吸收薄板覆蓋,則通過該 衝表及收薄板吸收了衝擊波,所以對於來自側部的衝擊, 液晶顯示部件也被保護起來。 【實施方式】 圖1是表示本實施方式的液晶顯示裝置結構的剖視圖。圖 2是分離表示所述液晶顯示裝置的構成要素的立體圖。 本只施方式是反射型液晶顯示裝置,大致由液晶顯示部 件1、敗體構件2、可撓性基板3構成。其中,液晶顯示部件 1由以下α卩刀構成·在第一玻璃基板η和第二玻璃基板I〕之 間包圍在密封構件13中,密封了液晶組成物14而構成的液 曰曰面板1 5,黏貼在該液晶面板1 5 —面一側的圖像顯示面s 一 侧的由偏振片和兩塊相位差板構成的光控制板丨6。第一玻 璃基板11的一邊部延伸到密封構件丨3的外側,形成電極端子 部1 7。除去電極端子部丨7的液晶面板丨5的尺寸是4〇 X π mm,第一和第二玻璃基板u、12的板厚例如為〇55mm。須 指出的是,在第一玻璃基板n和第二玻璃基板12的雙方或一 方的内側面上設置了液晶驅動電極、濾色器、反射板、定 向膜等,但是省略了圖示和說明。 mm 缓衝構件1 8黏貼在第二玻璃基板1 2的背面_側(另一面一 側)即液晶顯示邵件1非顯示面B —側的中央部上。該緩衝構 件18例如是把〇·3 mm的泡沫聚亞胺酯的薄板切斷為 84736-930625.doc -10- 1226486 x 7·5 mm的長方形而形成的,並且用兩面膠帶黏貼在顯示面 側的中央部上。由該泡沫聚亞胺酯構成的緩衝構件18中 ’壓縮負載(壓縮速度1·〇 mm/min,壓縮率25%時)為0 2 kg/cm2,壓縮永久變型(依據JIS-K6401)為2.0%。 殼體構件2是構成四壁的殼體部2 1和底板2 2 —體成形的 塑膠模壓構件,成長方形的托盤狀,底板22厚度例如為〇 3 mm。底板22的中央附近形成了例如20 mm X 8 mm的矩形開 口邵23。液晶顯示部件1使表面露出圖像顯示面S,安放在 包圍殼體部2 1的底板22之上。這時,黏貼在液晶顯示部件1 上的緩衝構件1 8緩和地嵌入底板22的開口部23中。另外, 在底板22的外側面,形成了用於把可撓性基板3固定在殼體 構件2上的爪型的突起部25。 可撓性基板3由大致長方形的撓性樹脂底座構成,在一方 的端邵形成了液晶面板連接用的端子部3 1,該端子部3 1通 過ACF(各向異性薄膜)與形成在液晶顯示部件1的第一玻璃 基板11上的電極端子部17連接。該可撓性基板3引出到殼體 構件2的外側,配置為蔓延到殼體構件2的背面一側,沿著 底板22的外面,覆蓋開口部23而延伸。可撓性基板3通過設 置在合適位置的突起部25,固定在底板22的外侧面上。在 可撓性基板3的外表面上,在覆蓋開口部23的區域R内,安 裝了多個具有1C晶片等厚度的某驅動用電路元件32。這些 電路元件32和電極端子部17通過形成在可撓性基板3上的 未圖示的印刷佈線彼此連接。另外,該印刷佈線通過未圖 示的端子部連接了外部電路。 84736-930625.doc -11 - 1226486 (實施方式2) 圖3是表示實施方式2的液晶顯示裝置結構的剖視圖。 本實施方式是反射型液晶顯示裝置,大致由液晶顯示部 件1、前光裝置4、殼體構件2、可撓性基板3構成。其中, 液晶顯示部件1以及可撓性基板3與實施方式1中說明的實 質上同樣,所以省略了詳細說明,對於與實施方式1的結構 相同的部分,採用了相同的符號。1226486 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a liquid crystal display device having excellent impact resistance. [Prior art] Generally, a liquid crystal display device includes a liquid crystal display part, a driving circuit for inputting a driving signal to the liquid crystal display device, and a case member holding them together. A liquid crystal display element is basically composed of a liquid crystal panel in which a liquid composition is sealed between two glass substrates, a polarizer, a retardation plate, and the like attached to the outer surface of the glass substrate. In addition to this, when the liquid crystal display component is a transmissive or transflective type, a backlight device may be mounted on the rear surface (non-display surface) of the liquid crystal panel. In addition, when the liquid crystal display component is a reflective type, it is' on the surface of the liquid crystal panel. A front light unit is installed, or a reflector is installed in the liquid crystal display unit. If a liquid crystal display device having such a structure is used in a small device such as a mobile phone and a PDA (personal digital assistant, portable information terminal), the thickness and weight of the entire device will be reduced. Glass substrates and housing members are also required to be extremely thin and light. For example, the thickness of the glass substrate used to be about M mm to 0.7 mm, but it is now as thin as about 55 mm to 0.5 mm ′ or as thin as about 0.4 mm depending on the situation. [Summary of the Invention] (Problems to be Solved by the Invention) As described above, if the components are extremely thin and lightweight, the liquid crystal panel and the housing components may be easily damaged due to the handling of the instrument, mechanical bending and impact during carrying, etc. problem. Especially in mobile phones and pDA operations, such as 84736-930625.doc 1226486 Yiluo, accidents such as accidentally falling onto the road or floor while carrying heavy objects on Yixing are considered when carrying. Therefore, liquid crystal display devices used in thin and lightweight mobile devices are required to have further impact resistance. In addition, other problems include the problem that bubbles may be generated in the liquid crystal panel due to an impact such as when dropped. This is considered to be a phenomenon caused by gasification of a gas component such as air dissolved in a liquid crystal constituent species due to a sharp pressure change due to impact. In order to improve the impact resistance of thin liquid crystal display devices, conventionally, for example, a metal having a liquid crystal panel, a circuit board on which a driving circuit is mounted, and a metal that fixes the two at a predetermined relative position by including a conductive rubber has been proposed. A liquid crystal display device with a frame; or a liquid crystal panel, a flexible substrate on which a driving circuit is mounted, and a frame disposed thereon, the flexible substrate and the electrode terminal arrangement surface of the liquid crystal panel are aligned with each other, and a connector A liquid crystal display device having a buffer material disposed between the frame and the frame. However, these are the connecting portions that protect the electrode terminals of the liquid crystal panel and the electrode terminals of the flexible substrate from impact. Based on this, it can be said that the liquid crystal panel itself is also protected, but the ultra-thin liquid crystal panel is damaged. And the occurrence of bubbles can not be expected. The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a liquid crystal display device having excellent impact resistance even if the thickness and thickness are reduced. (Means for Solving the Problems) In order to solve the problems, the present invention provides a liquid crystal display device. A liquid crystal display part including a liquid crystal panel in which a liquid crystal composition is sealed between two substrates is housed in a case member. The surface of the housing is used as an image display surface, and the surface of the other 84736-930625.doc 1226486 is used as a non-display surface; the housing member has a base plate opposite to the non-non-face surface of the liquid crystal display #piece. A part of the opening α 形成 ′ is formed on the non-display surface of the liquid crystal display member, and a buffer member inserted into the opening of the bottom plate is mounted. Generally, the damage caused by the impact of a liquid crystal panel and the occurrence of air bubbles are caused by the impact from external π. In the liquid crystal display device of the present invention, since a buffer member is installed on the non-display surface side of the liquid crystal display component, Therefore, the buffer member absorbs the shock wave transmitted to the non-display surface side of the liquid crystal panel, and can effectively prevent breakage and generation of bubbles. At this time, if a thick cushioning member is installed only on the non-display surface-side, the thickness of the cushioning member alone increases the thickness of the entire liquid display device, which cannot meet the requirements for thinning. In the present invention, it is assumed that the buffer member is inserted into the opening formed in the bottom plate of the case member ', so that the thickness of the entire liquid crystal display device is increased due to the mounting of the buffer member. When the cushioning member is composed of a plate-like polymer foam, and the thickness of the cushioning member is equal to the thickness of the bottom plate of the shell member, or when the lower member is a polymer foam, it is desirable to include the polymer foam. The average diameter of the pores of the body is in the range of i 5 " m ~ 6〇_. In addition, in the buffer member described above, the compressive load (compression speed 10, compression; 25%) is within a target range of 0.6 kg / cm2 to 0.002 kg / cm2%, and a gage of w, g / cm, and Compression set (according to JIS-K6401) is in the range of 0.5% to 5.0%. The characteristics of the buffer member that can effectively absorb the impact of the liquid are explored. The permanent deformation characteristics are important, and the crystal panel causes damage and the occurrence of bubbles. As a result, it is known that the compression negative characteristics and the compression are especially when the characteristics are at the stated values. 84736-930625.doc 1226486, effective buffering effect is achieved. As a material satisfying this characteristic, a polymer foam is exemplified. Examples of polymer foams suitable for use in the present invention include foams such as polyethylene, polyimide, polyethylene, and soft polyvinyl chloride. In particular, polyethylene and polyurethane foams have low compression set and good results at a suitable value. The polymer foam is formed into a plate shape or a thin plate shape. If the thickness is equal to or less than the thickness of the bottom plate of the case member, the cushion member will not be removed from the case when the liquid crystal display component is stored in the case member. The bottom plate of the member protrudes to the outside, and is protected from external stress. The present invention provides a liquid crystal display device in which a flexible substrate is connected to a peripheral portion of the liquid crystal panel, and the flexible substrate is along an outer side surface of the case member protruding to an outer side of the case member. It is bent and added to the back side of the first case member, covering the opening portion side of the bottom plate, and in the flexible substrate, a circuit element is mounted at a position to the opening portion. At this time, a circuit element such as a 1C wafer is disposed on the outer surface of the flexible substrate at a position covering the opening. If the flexible substrate spreads along the outer side of the housing member and covers the opening of the bottom plate, circuit elements such as 1C wafers are arranged outside the opening on the flexible substrate, even when the liquid crystal display device is dropped, The circuit member impacts the back side of the liquid crystal panel, and the buffer member also reduces the impact. The present invention provides a liquid crystal display device, wherein the image display surface of the liquid crystal display component and the upper surface of the housing member are substantially one surface, and the boundary thereof is covered with an impact-absorbing sheet. If a side portion of the liquid crystal display device is impacted due to dropping or the like, a part of the impact stress of 84736-930625.doc 1226486 is transmitted from the edge of the housing member to the edge portion of the liquid crystal display member released from the edge, and sometimes This may cause damage to the liquid crystal panel and the like. If the image display surface of the liquid crystal display part and the upper surface of the housing member are made into one surface, and the boundary is covered by the shock absorbing sheet, the shock wave is absorbed by the punch meter and the thinner sheet. The impact of the liquid crystal display parts is also protected. Embodiment FIG. 1 is a cross-sectional view showing a structure of a liquid crystal display device according to this embodiment. FIG. 2 is a perspective view showing components of the liquid crystal display device separately. This embodiment is a reflection type liquid crystal display device, and is roughly composed of a liquid crystal display device 1, a failure member 2, and a flexible substrate 3. Among them, the liquid crystal display component 1 is composed of the following α trowel. A liquid crystal panel 15 is formed by enclosing a sealing member 13 between a first glass substrate η and a second glass substrate I] and sealing the liquid crystal composition 14. A light control plate composed of a polarizing plate and two retardation plates is attached to the image display surface s side of the liquid crystal panel 15-side. One side portion of the first glass substrate 11 extends to the outside of the sealing member 3, and an electrode terminal portion 17 is formed. The size of the liquid crystal panel 5 except the electrode terminal section 7 is 40 × π mm, and the thickness of the first and second glass substrates u and 12 is, for example, 055 mm. It should be noted that a liquid crystal driving electrode, a color filter, a reflecting plate, an alignment film, and the like are provided on the inside surfaces of both or one of the first glass substrate n and the second glass substrate 12, but illustration and description are omitted. The mm buffer member 18 is adhered to the center portion of the non-display surface B of the liquid crystal display element 1 on the back surface side (the other surface side) of the second glass substrate 12. This cushioning member 18 is formed by cutting a 0.3 mm foamed polyurethane sheet into a rectangular shape of 84736-930625.doc -10- 1226486 x 7.5 mm, and is adhered to the display surface with double-sided tape. On the central part of the side. The compression load (at a compression speed of 1.0 mm / min and a compression rate of 25%) in the cushioning member 18 made of the foamed polyurethane is 0 2 kg / cm2, and the compression permanent deformation (according to JIS-K6401) is 2.0 %. The case member 2 is a plastic molded member that is a body formed of a four-walled case portion 21 and a bottom plate 2 2, and has a rectangular tray shape. The thickness of the bottom plate 22 is, for example, 0.3 mm. A rectangular opening 23, for example, 20 mm X 8 mm is formed near the center of the bottom plate 22. The liquid crystal display member 1 has its surface exposed on the image display surface S, and is placed on a bottom plate 22 surrounding the housing portion 21. At this time, the buffer member 18 adhered to the liquid crystal display member 1 is gently inserted into the opening portion 23 of the base plate 22. In addition, on the outer side surface of the bottom plate 22, a claw-shaped projection portion 25 for fixing the flexible substrate 3 to the case member 2 is formed. The flexible substrate 3 is composed of a substantially rectangular flexible resin base, and a terminal portion 31 for connecting a liquid crystal panel is formed at one end. The terminal portion 31 is formed on an LCD through an ACF (anisotropic film) and The electrode terminal portions 17 on the first glass substrate 11 of the component 1 are connected. The flexible substrate 3 is led out to the outside of the case member 2 and is arranged so as to spread to the back side of the case member 2 and extend along the outer surface of the bottom plate 22 so as to cover the opening 23. The flexible substrate 3 is fixed to the outer surface of the base plate 22 by a protrusion 25 provided at an appropriate position. On the outer surface of the flexible substrate 3, a plurality of certain driving circuit elements 32 having a thickness of 1C wafer or the like are mounted in a region R covering the opening portion 23. These circuit elements 32 and the electrode terminal portions 17 are connected to each other by a printed wiring (not shown) formed on the flexible substrate 3. The printed wiring is connected to an external circuit through a terminal portion (not shown). 84736-930625.doc -11-1226486 (Embodiment 2) FIG. 3 is a cross-sectional view showing the structure of a liquid crystal display device according to Embodiment 2. This embodiment is a reflective liquid crystal display device, and is roughly composed of a liquid crystal display device 1, a front light device 4, a case member 2, and a flexible substrate 3. The liquid crystal display component 1 and the flexible substrate 3 are substantially the same as those described in the first embodiment, so detailed descriptions are omitted. The same components as those in the first embodiment are denoted by the same reference numerals.

觔光裝置4疋透明的板狀體,由在其一方的面上排列了棱 鏡狀的凹凸的照明板4 1和未圖示的光源部構成,來自光源 部的光從照明板41的側面入射,通過照明板41的内表面反 射,向著液晶顯示部件1把照明光照射為面狀的裝置,由液 曰曰顯示部件1内的未圖示的反射板反射的所述照明光依次 通過光控制板16和照明板41,從而觀察者能在視覺上識別 圖像。在本實施方式中,前光裝置4的照明板41通過兩面膠 帶43黏貼在液晶顯示部件}的光控制板16上。因此,在本實 施方式中,照明板41的向外的面變為圖像顯示面s。另外, 在照明板41的各邊部形成了切口 42。 几又把構件2疋敗體邵2 1和底板22 —體形成的塑膠模壓構 件’與實施方式1中說明的實質上同樣,但是殼體部2ι上邊 在内側延#,形成框邵26。該框部26在液晶顯示部件工和前 光裝置4收藏在殼體構件2内的狀態下,與照明板41的切口 42配&防止則光裝置4和液晶顯示部件1的脫落,並上表 面調整為與照明板41的圖像顯示面S變為-個面。而i,在 泛框#26和照明板41邊界通過黏合劑黏貼了由泡沫聚亞胺 84736-930625.doc -12- 1226486 酯構成的衝擊吸收薄板44。 [實施例] (耐衝擊性試驗) 抱實施方式1的液晶顯示裝置作為實施例i,用以下方法 2耐衝#性進行了試驗。圖4是表示耐衝擊性試驗的實施狀 怨的概略圖。是在面板尺寸約4Gx5Qmm(利用板厚⑴ 的玻璃基板)的液晶面板上黏貼兩塊偏振片和相位差板,在 液晶面板的端部搭載了多個驅動用IC晶片的結構,厚度〇 3 mm的樹脂模的框狀構造體嵌入液晶面板的周圍。該模具中 形士了約2〇X8 mm的開口部。對於該開口部,在液晶面板 的背面-側’用兩面膠帶黏貼了由泡沫聚亞胺酉旨沒縮永久 變形2.0%(JISK640υ、i縮負載〇 2 kg/cm2)構成的板厚〇 3 mm、尺寸19 X 7 · 5 mm的緩衝構件1 8。 如圖4所示,在本液晶顯示裝置的圖像顯示面s的中央部 ,用兩面膠帶(厚度25 //m)黏貼了負載測量用感測器(v才 >公司製造的模型PV90B)PU。該試樣以非顯示面B 一側為 下’在桌上的柳安木板(板厚30 mm)上方以水平狀態保持, 使落下南度h從10 c m到1 0 〇 c m變化,自然落下。 對各落下试驗’觀祭試樣的破損狀況,記錄了發生破損 的高度和破損部位。同樣,對各落下試驗,觀察了試樣的 液晶面板内的氣泡發生狀況,記錄了氣泡發生狀況。另外 ’與破損、是否發生氣泡無關,在使其落下時,測定通過 感測器PU計測的衝擊(G),圖5表示了測定結果。 (比較例1) 84736-930625.doc -13 - 1226486 為了比較,製作了與實施方式1同樣的結構,可是在殼體構 件的底板上不形成開口部,並且在液晶顯示部件的非顯示面 B上不黏貼緩衝構件的比較例的液晶顯示裝置,與實施方式} 同樣,進行了所述耐衝擊性試驗。圖5表示了其結果。 圖5所示的耐衝擊性試驗的結果、實施方式㈣液晶顯示 裝置(實施例丨)與不具有緩衝構件的比較例丨相比,發生破損 的高度大幅度提高,對於落下高度的衝擊也減少。在實施 例1的液晶顯示裝置中,即使落下高度為1〇〇cm,也不發生 破損,在液晶面板内不產生衝擊引起的氣泡。當使落下高 度為130 cm時,液晶顯示裝置破損。 (實施例2) 用和實施方式1同樣的結構,可是緩衝構件18的厚度為〇,5 mm,進行了與實施方式丨時同樣的耐衝擊性試驗。使用的緩 衝構件是聚亞胺酯製,壓縮負載(壓縮速度1〇 mm/mm,壓 、、宿率25/〇時)為〇·2 kg/cm ,壓縮永久變形(依據JIS_K64〇1) 在 2.5% 〇 在實施例2的試驗中,即使落下高度為15〇 cm,也不發生 液晶顯示裝置的破損和氣泡。 (實施例3) 用和實施方式1同樣的結構,可是作為緩衝構件18,使用 了把厚度為〇。3 mm的泡沫聚亞胺酯薄板切斷為Μ㈤㈤父?」 mm的尺寸的薄板。該泡沫聚亞胺酯薄板的壓縮負載為〇·40 kg/cm2,壓縮永久變形(依據JIS-K64〇1)在45%。關於該試 驗體,進行了與實施方式1時同樣的耐衝擊性試驗,即使落 84736-930625.doc -14- 1226486 I 痛 下高度為90 cm,也不發生液晶顯示裝置的破損和氣泡。 從以上的試驗可知,在無論在實施例丨、2、3中,都證實 了較比較例優異的衝擊吸收性能。 本發明的液晶顯示裝置在殼體構件的底板上形成了開口 部,在液晶顯示部件的非顯示面—側安裝了能插入所述開 口。ί5中的.k衝構件,所以,即使在液晶顯示裝置大幅度薄 型化、輕型化時,也能取得優異的耐衝擊性。 在本發明中,緩衝構件由板狀高分子泡沫體構成,並且 如果該緩衝構件的厚度與所述殼體構件的底板厚度相等或 在/、以下,則不用增加液晶顯示裝置全體的厚度,就取得 了優異的耐衝擊性。 本發明使液晶顯示部件的圖像顯示面和殼體構件的上表 面大致為一個面,邊界由衝擊吸收薄板覆蓋,所以如果由 於落下等而受到衝擊,由於衝擊吸收薄板吸收了衝擊, 以對於來自側部的衝擊,也保護了液晶顯示部件,成 衝擊的構造。 為抗 【圖式簡單說明】 圖1是表示本發明的實施方式1的液晶顯示裝置处 視圖。 、、。稱的剖 圖2疋分離表示所述液晶顯示裝置的構成要素的—峻 乂岐圖。 圖3是表示本發明的實施方式2的液晶顯示裝置红 視圖。 、、°稱的剖 圖4是表示耐衝擊性試驗的實施方式的概略圖。 圖5是表示液晶顯示裝置的落下試驗結果的圖。 84736-930625.doc -15- 1226486 【圖式代表符號說明】 1···液晶顯示部件;2···殼體構件;3·< 前光裝置;11···第一玻璃基板;12···第二 封構件;14···液晶組成物;15···液晶面 ;17···電極端子部;18···緩衝構件;21 板;23···開口部;25···爪部;26···框部 …電路構件;4卜··照明板;42···切口; …衝擊吸收薄板。 •可撓性基板;4… -玻璃基板;1 3…密 板;1 6…光控制板 …殼體部;2 2…底 ;31…端子部;32 43…兩面膠帶;44 84736-930625.doc -16-The light-reflecting device 4 is a transparent plate-shaped body composed of a lighting plate 41 in which prism-shaped irregularities are arranged on one surface and a light source portion (not shown), and light from the light source portion is incident from the side of the lighting plate 41 A device that reflects the inner surface of the lighting plate 41 to illuminate the illumination light toward the liquid crystal display member 1 in a planar shape, and the illumination light reflected by a non-illustrated reflecting plate in the liquid display member 1 is sequentially controlled by light. The plate 16 and the illumination plate 41 so that an observer can visually recognize the image. In this embodiment, the illuminating plate 41 of the front light device 4 is adhered to the light control plate 16 of the liquid crystal display unit through a double-sided adhesive tape 43. Therefore, in this embodiment, the outward surface of the lighting plate 41 becomes the image display surface s. In addition, cutouts 42 are formed on each side of the lighting plate 41. The plastic molded member ′ formed of the member 2 and the base member 22 and the bottom plate 22 is substantially the same as that described in the first embodiment, but the upper portion of the housing portion 2 is extended inside to form the frame member 26. This frame portion 26 is provided with the cutout 42 of the lighting panel 41 in a state where the liquid crystal display component and the front light device 4 are stored in the case member 2 to prevent the light device 4 and the liquid crystal display component 1 from falling off and put on. The surface is adjusted so as to be a single surface with the image display surface S of the lighting plate 41. On the other hand, an impact-absorbing sheet 44 made of foamed polyurethane 84736-930625.doc -12-1226486 ester was pasted on the border of pan frame # 26 and lighting board 41 by an adhesive. [Examples] (Impact resistance test) The liquid crystal display device of Embodiment 1 was used as Example i, and the impact resistance was tested by the following method 2. Fig. 4 is a schematic diagram showing an embodiment of an impact resistance test. It is a structure in which two polarizers and retardation plates are pasted on a liquid crystal panel with a panel size of about 4Gx5Qmm (using a glass substrate with a thickness of ⑴), and a plurality of driving IC chips are mounted on the end of the liquid crystal panel. The thickness is 0.3 mm The frame-shaped structure of the resin mold is embedded around the liquid crystal panel. The mold has an opening of about 20 × 8 mm. For this opening, a double-sided tape was used on the back-side side of the liquid crystal panel to attach a plate thickness of 3.0% made of foamed polyurethane with a permanent shrinkage of 2.0% (JISK640υ, a shrinkage load of 0.2 kg / cm2). 19, 7 · 5 mm buffer member size 18. As shown in FIG. 4, a load measurement sensor (vcai model PV90B manufactured by the company) is attached to the center of the image display surface s of the liquid crystal display device with a double-sided tape (thickness 25 // m). PU. The sample is held on the non-display surface B side downwards' above a Liuan wooden board (thickness: 30 mm) on the table in a horizontal state, and the drop south degree h is changed from 10 cm to 100 cm, and it falls naturally. Regarding the damage of each of the drop test 'observation samples, the height at which the damage occurred and the location of the damage were recorded. Similarly, for each drop test, the occurrence of bubbles in the liquid crystal panel of the sample was observed, and the occurrence of bubbles was recorded. It is to be noted that the impact (G) measured by the sensor PU is measured regardless of the breakage or the occurrence of air bubbles. Fig. 5 shows the measurement results. (Comparative Example 1) 84736-930625.doc -13-1226486 For comparison, the same structure as in Embodiment 1 was produced, but no opening was formed in the bottom plate of the case member, and the non-display surface B of the liquid crystal display part In the liquid crystal display device of the comparative example in which the cushioning member was not adhered, the impact resistance test was performed in the same manner as in the embodiment}. Figure 5 shows the results. The results of the impact resistance test shown in FIG. 5, Embodiment ㈣The liquid crystal display device (Example 丨) has a significantly higher height of breakage than a comparative example 丨 without a cushioning member, and the impact on the drop height is also reduced. . In the liquid crystal display device of Example 1, even if the drop height was 100 cm, no breakage occurred, and no bubbles caused by the impact occurred in the liquid crystal panel. When the drop height is set to 130 cm, the liquid crystal display device is damaged. (Example 2) With the same structure as in the first embodiment, the thickness of the cushioning member 18 was 0.5 mm, and the same impact resistance test as in the first embodiment was performed. The cushioning member used is made of polyurethane, and the compression load (compression speed 10mm / mm, compression rate, and sink rate 25 / 〇) is 0.2 kg / cm. Compression set (according to JIS_K64〇1) in 2.5% 〇 In the test of Example 2, even if the drop height was 15 cm, the liquid crystal display device was not damaged and bubbles did not occur. (Example 3) The same structure as in the first embodiment is used, but as the cushioning member 18, a thickness of 0 is used. 3 mm foamed polyurethane sheet cut to Μ㈤㈤ father? ”Mm size sheet. The compressive load of the foamed polyurethane sheet was 0.40 kg / cm2, and the compression set (based on JIS-K64001) was 45%. With regard to this test body, the same impact resistance test as in Embodiment 1 was performed. Even if the height was 90 cm at 84736-930625.doc -14-1226486 I, the liquid crystal display device was not damaged and bubbles did not occur. It can be seen from the above tests that, in Examples 丨, 2, and 3, it was confirmed that the impact absorbing performance is superior to that of the comparative example. In the liquid crystal display device of the present invention, an opening is formed in the bottom plate of the case member, and the non-display surface of the liquid crystal display member is provided with a side into which the opening can be inserted. Since the .k punch member in 5 is used, even when the liquid crystal display device is greatly thinned and lightened, excellent impact resistance can be obtained. In the present invention, the buffer member is composed of a plate-like polymer foam, and if the thickness of the buffer member is equal to or less than or equal to the thickness of the bottom plate of the case member, the thickness of the entire liquid crystal display device is not required to be increased. Achieved excellent impact resistance. According to the present invention, the image display surface of the liquid crystal display component and the upper surface of the housing member are approximately one surface, and the boundary is covered by the impact absorbing sheet. Therefore, if an impact is caused by a fall or the like, the impact absorbing sheet absorbs the impact. The impact on the side also protects the liquid crystal display component, making it an impact structure. In order to resist the problem [Brief description of the drawings] Fig. 1 is a view showing a liquid crystal display device according to a first embodiment of the present invention. ,,. Fig. 2 is a cross-sectional view showing components of the liquid crystal display device separately. Fig. 3 is a red view showing a liquid crystal display device according to a second embodiment of the present invention. Sections of the scales and angles Fig. 4 is a schematic diagram showing an embodiment of an impact resistance test. FIG. 5 is a diagram showing a drop test result of the liquid crystal display device. 84736-930625.doc -15- 1226486 [Description of Symbols of Representation of Drawings] 1 ··· Liquid crystal display part; 2 ···· Housing member; 3 < Front light device; 11 ··· First glass substrate; 12 ··· Second sealing member; 14 ·· Liquid crystal composition; 15 ··· Liquid crystal surface; 17 ··· Electrode terminal portion; 18 ··· Buffer member; 21 plate; 23 ··· Opening portion; 25 · ·· Claw section; 26 ··· Frame section ... Circuit member; 4 ··· Lighting plate; 42 ··· Cut;… Impact absorbing sheet. • Flexible substrate; 4 ...-glass substrate; 1 3 ... dense plate; 1 6 ... light control board ... housing portion; 2 2 ... bottom; 31 ... terminal portion; 32 43 ... double-sided tape; 44 84736-930625. doc -16-

Claims (1)

1226486 所 上表 述液晶顯示部件的圖像顯示面和所述殼體構件的 面大致為一個面,其邊界由衝擊吸收薄板覆蓋。 84736-930625.doc1226486 shows that the image display surface of the liquid crystal display component and the surface of the housing member are approximately one surface, and the boundary is covered by an impact-absorbing sheet. 84736-930625.doc
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CN1211692C (en) 2005-07-20
TW200307833A (en) 2003-12-16

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