JP2016142801A - Liquid crystal display device - Google Patents
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本発明は、表示パネルの画像表示の駆動制御等を行う半導体集積回路素子としての駆動用ＩＣ，ＬＳＩと、駆動用ＩＣ，ＬＳＩに駆動信号、制御信号等を入出力するためのフレキシブル回路基板（Flexible Printed Circuits ：ＦＰＣ）と、を有する液晶表示装置（Liquid Crystal Display ：ＬＣＤ）に関するものである。 The present invention relates to a driving IC or LSI as a semiconductor integrated circuit element that performs drive control of image display on a display panel, and a flexible circuit board for inputting / outputting a driving signal, a control signal, etc. to the driving IC or LSI ( The present invention relates to a liquid crystal display (LCD) having a flexible printed circuit (FPC).
従来のＬＣＤの１例を図７（ａ），（ｂ）に示す。従来、ＬＣＤは、ＴＦＴ素子４２を含む画素部４４が多数形成されたアレイ側基板３１と、カラーフィルタ及びブラックマトリクスが形成されたカラーフィルタ側基板３２とを互いに対向させて、それらの基板を所定の間隔でもって貼り合わせ、それらの基板間に液晶４８を充填、封入させることによって作製される。また、一般的に、カラーフィルタ側基板３２は、ＴＦＴ素子４２及び画素電極４３に対向する側の面（液晶４８側の面）の全面に、画素電極４３との間で液晶４８に印加する垂直電界を形成するための共通電極４７が形成されている。また、ＬＣＤが画素電極４３と共通電極４７との間で液晶４８に印加する横電界を形成するＩＰＳ（In-Plane Switching）方式のＬＣＤである場合、共通電極はアレイ側基板３１の画素電極４３と同じ面内に形成される。ＬＣＤが画素電極４３と共通電極との間で液晶に印加する端部電界を形成するＦＦＳ（Fringe Field Switching）方式のＬＣＤである場合、共通電極はアレイ側基板３１の画素部４４に画素電極４３の上方または下方に絶縁層を挟んで形成される。また、カラーフィルタ側基板３２の液晶４８側の面には、それぞれの画素部４４に対応する赤（Ｒ）、緑（Ｇ）、青（Ｂ）のカラーフィルタ４５が形成されており、それぞれの画素部４４を通過する光が相互に干渉することを防ぐブラックマトリクスがカラーフィルタ４５の外周を囲むように形成されている。なお、図７（ｂ）において、４６はカラーフィルタ４５と共通電極４７との間に介在するように形成されている絶縁層、３３はカラーフィルタ側基板３２の表示側の面に形成されたＩＴＯ（Indium Tin Oxide）等から成る透明導電膜である。 An example of a conventional LCD is shown in FIGS. 7 (a) and 7 (b). Conventionally, in an LCD, an array side substrate 31 on which a large number of pixel portions 44 including TFT elements 42 are formed and a color filter side substrate 32 on which a color filter and a black matrix are formed are opposed to each other, and these substrates are predetermined. And the liquid crystal 48 is filled and sealed between the substrates. In general, the color filter side substrate 32 is vertically applied to the liquid crystal 48 between the pixel electrode 43 and the entire surface on the side facing the TFT element 42 and the pixel electrode 43 (surface on the liquid crystal 48 side). A common electrode 47 for forming an electric field is formed. When the LCD is an IPS (In-Plane Switching) type LCD that forms a lateral electric field applied to the liquid crystal 48 between the pixel electrode 43 and the common electrode 47, the common electrode is the pixel electrode 43 of the array side substrate 31. Are formed in the same plane. When the LCD is an FFS (Fringe Field Switching) type LCD that forms an end field applied to the liquid crystal between the pixel electrode 43 and the common electrode, the common electrode is connected to the pixel portion 44 of the array side substrate 31 with the pixel electrode 43. Is formed with an insulating layer sandwiched between above and below. Further, on the surface of the color filter side substrate 32 on the liquid crystal 48 side, red (R), green (G), and blue (B) color filters 45 corresponding to the respective pixel portions 44 are formed. A black matrix that prevents light passing through the pixel portion 44 from interfering with each other is formed so as to surround the outer periphery of the color filter 45. 7B, 46 is an insulating layer formed so as to be interposed between the color filter 45 and the common electrode 47, and 33 is ITO formed on the display side surface of the color filter side substrate 32. It is a transparent conductive film made of (Indium Tin Oxide) or the like.
また、アレイ側基板３１の液晶４８側の面におけるカラーフィルタ側基板３２から突出している突出面31aには、液晶表示パネルの画像表示の駆動制御等を行う半導体集積回路素子としての駆動用ＩＣ３４がチップオングラス（Chip On Glass ：ＣＯＧ）方式等の実装方法により搭載されており、さらに駆動用ＩＣ３４に外部から駆動信号、制御信号等を入出力するＦＰＣ３５が、突出面31aの端部に設置されている。突出面31aは、駆動用ＩＣ３４からＦＰＣ３５の信号配線35aに電気的に接続される電極端子にかけてＦＰＣ３５側の第１の引出線３９が形成されており、駆動用ＩＣ３４からＴＦＴ素子４２、画素電極４３にかけて液晶表示パネル側の第２の引出線４０が形成されている。なお、一般に第１の引出線３９は、第２の引出電４０と比較して、クロック信号、ビデオ信号、低電圧差動信号（Low Voltage Differential Signaling ：ＬＶＤＳ）等の周波数の高い信号（周波数が数１０ＭＨｚ以上の信号）を伝送し、第２の引出電４０は１Ｈ（水平走査期間）に相当する周波数（31.5ｋＨｚ等）などの周波数の低い信号を伝送する。 Further, a driving IC 34 as a semiconductor integrated circuit element that performs image display driving control of the liquid crystal display panel and the like is provided on the protruding surface 31a protruding from the color filter side substrate 32 on the liquid crystal 48 side surface of the array side substrate 31. It is mounted by a mounting method such as a chip on glass (COG) method, and an FPC 35 that inputs / outputs a drive signal, a control signal, etc. from the outside to the driving IC 34 is installed at the end of the protruding surface 31a. ing. A first lead line 39 on the FPC 35 side is formed on the protruding surface 31a from the driving IC 34 to an electrode terminal electrically connected to the signal wiring 35a of the FPC 35. The TFT IC 42 and the pixel electrode 43 are formed from the driving IC 34. A second lead line 40 on the liquid crystal display panel side is formed. In general, the first lead line 39 has a higher frequency signal (frequency is lower) such as a clock signal, a video signal, and a low voltage differential signal (LVDS) than the second lead line 40. Signal of several tens of MHz or more), and the second extraction power 40 transmits a signal having a low frequency such as a frequency (31.5 kHz or the like) corresponding to 1H (horizontal scanning period).
また、ＦＰＣ３５は駆動用ＩＣ３４側に延出する延出部３６を有しており、延出部３６は駆動用ＩＣ３４の上方にあって駆動用ＩＣ３４を覆うとともに、その端部が透明導電膜３３に達している。また延出部３６は、駆動用ＩＣ３４、第１の引出線３９及び第２の引出線４０に外部から電磁的ノイズが入り込んで電気的に重畳することを防ぐための銅（Ｃｕ）箔等から成る電磁遮蔽用の導電膜３８を有しており、導電膜３８はＦＰＣ３５の接地配線３７に接続されている。さらに延出部３６は、導電膜３８の端部が異方性導電膜（Anisotropic Conductive Film ：ＡＣＦ）、導電性樹脂等から成る導電接続部材４１を介して透明導電膜３３に電気的に接続されている。これにより、ＦＰＣ３５の延出部３６によって液晶表示パネルの接地をとることもでき、例えば液晶表示パネルの静電気を効果的に放電させるための静電気放電（Electro-Static Discharge ：ＥＳＤ）対策にも有効なＬＣＤとなる。 The FPC 35 has an extending portion 36 extending to the driving IC 34 side. The extending portion 36 is above the driving IC 34 and covers the driving IC 34, and an end portion of the extending portion 36 is the transparent conductive film 33. Has reached. The extending portion 36 is made of a copper (Cu) foil or the like for preventing electromagnetic noise from entering and electrically overlapping the driving IC 34, the first lead wire 39, and the second lead wire 40 from the outside. The conductive film 38 for electromagnetic shielding is provided, and the conductive film 38 is connected to the ground wiring 37 of the FPC 35. Further, the extended portion 36 is electrically connected to the transparent conductive film 33 at the end of the conductive film 38 via a conductive connection member 41 made of an anisotropic conductive film (ACF), a conductive resin, or the like. ing. Thereby, the liquid crystal display panel can be grounded by the extending portion 36 of the FPC 35, and it is also effective for measures against electrostatic discharge (Electro-Static Discharge: ESD) for effectively discharging static electricity of the liquid crystal display panel, for example. LCD.
しかしながら、図７に示す上記従来のＬＣＤにおいては、第１の引出線３９は周波数の高い信号を伝送するために外部の電磁的ノイズの影響を受けやすいのに対して、第１の引出線３９に比較して周波数が低い信号を伝送する第２の引出線４０は、導電膜３８による電磁遮蔽効果が発現しにくい部位である。また、駆動用ＩＣ３４も予め半導体集積回路部が樹脂絶縁材等によって覆われているために導電膜３８による電磁遮蔽効果が発現しにくい部位である。これらの導電膜３８による電磁遮蔽効果が発現しにくい部位まで延出部３６及び導電膜３８によって覆っているために、ＦＰＣ３５が高さ方向に大型化し、また軽量化に不利である。また、ＦＰＣ３５の構造が複雑化するのでＬＣＤの製造コストが増大するという問題点があった。また、特許文献１には、ＦＰＣを液晶表示パネルの各入力配線の基端部の部分に接続したＬＣＤが開示されているが、このような構成のＬＣＤは、ＦＰＣが駆動用ＩＣの入力配線に対して電磁遮蔽効果を殆ど発現し得ないという問題点があった。 However, in the conventional LCD shown in FIG. 7, the first lead line 39 is susceptible to external electromagnetic noise to transmit a high-frequency signal, whereas the first lead line 39. The second lead line 40 that transmits a signal having a frequency lower than that of FIG. Further, the driving IC 34 is also a part where the electromagnetic shielding effect by the conductive film 38 is difficult to be exhibited because the semiconductor integrated circuit portion is previously covered with a resin insulating material or the like. Since the extending portion 36 and the conductive film 38 cover portions where the electromagnetic shielding effect due to the conductive film 38 is difficult to be exhibited, the FPC 35 is increased in size in the height direction and is disadvantageous in terms of weight reduction. Further, since the structure of the FPC 35 is complicated, there is a problem that the manufacturing cost of the LCD increases. Patent Document 1 discloses an LCD in which an FPC is connected to a base end portion of each input wiring of a liquid crystal display panel. In such an LCD, the FPC has an input wiring for a driving IC. However, there is a problem that the electromagnetic shielding effect can hardly be expressed.
本発明は、上記の問題点に鑑みて完成されたものであり、その目的は、小型化、軽量化されたＦＰＣを用いて駆動用ＩＣの引出線に対して効果的な電磁遮蔽効果を発現して半導体集積回路素子の誤動作を抑制し得るＬＣＤとすること、また簡易な構成のＦＰＣとすることにより製造コストを低減化し得るＬＣＤとすることである。 The present invention has been completed in view of the above-described problems, and its purpose is to produce an effective electromagnetic shielding effect on the leader line of a driving IC using a miniaturized and lightweight FPC. Thus, an LCD capable of suppressing malfunction of the semiconductor integrated circuit element, and an LCD capable of reducing the manufacturing cost by adopting an FPC having a simple configuration.
本発明の液晶表示装置は、一面に複数の画素部を有する第１の基板と、その第１の基板の前記一面とそれに対向する面との間で液晶を挟持する第２の基板と、前記第１の基板の前記一面の端部が前記第２の基板から突出している突出面に設けられている前記画素部を駆動するための半導体集積回路素子と、前記突出面の端部に設置されている信号配線及び接地配線を有するフレキシブル回路基板と、前記半導体集積回路素子と前記信号配線とを電気的に接続するように前記突出面に形成されている第１の引出線と、前記半導体集積回路素子と前記画素部とを電気的に接続するように前記突出面から前記画素部にかけて形成されている第２の引出線と、を有する液晶表示装置であって、前記フレキシブル回路基板は、前記半導体集積回路素子側の部位に、前記第１の引出線に平面視で重なるとともに前記半導体集積回路素子及び前記第２の引出線の前記突出面の部位に平面視で重ならない電磁遮蔽導電膜を備えた延出部を有しており、前記電磁遮蔽導電膜は、前記接地配線に電気的に接続されている構成である。 The liquid crystal display device of the present invention includes a first substrate having a plurality of pixel portions on one surface, a second substrate that sandwiches liquid crystal between the one surface of the first substrate and a surface facing the first substrate, A semiconductor integrated circuit element for driving the pixel portion provided on a projecting surface projecting from the second substrate, an end of the one surface of the first substrate, and an end of the projecting surface A flexible circuit board having a signal wiring and a ground wiring, a first lead line formed on the projecting surface so as to electrically connect the semiconductor integrated circuit element and the signal wiring, and the semiconductor integrated circuit A second lead line formed from the projecting surface to the pixel portion so as to electrically connect the circuit element and the pixel portion, wherein the flexible circuit board includes: Semiconductor integrated circuit element side An extension portion including an electromagnetic shielding conductive film that overlaps the first leader line in a plan view and does not overlap the semiconductor integrated circuit element and the projecting surface part of the second lead line in a plan view. And the electromagnetic shielding conductive film is electrically connected to the ground wiring.
本発明の液晶表示装置は、好ましくは、前記第２の基板は、前記液晶側の面と対向する表示側の面に透明導電膜が形成されており、前記フレキシブル回路基板は、前記延出部に、一端側が前記電磁遮蔽導電膜に電気的に接続され他端側が前記透明導電膜に電気的に接続されている中継導電膜を備えた他の延出部が形成されている。 In the liquid crystal display device of the present invention, it is preferable that the second substrate has a transparent conductive film formed on a display side surface facing the liquid crystal side surface, and the flexible circuit board includes the extension portion. In addition, another extension portion including a relay conductive film having one end side electrically connected to the electromagnetic shielding conductive film and the other end side electrically connected to the transparent conductive film is formed.
また本発明の液晶表示装置は、好ましくは、前記延出部は、前記半導体集積回路素子及び前記第２の引出線の前記突出面の部位に平面視で重なる絶縁部を有している。 In the liquid crystal display device of the present invention, it is preferable that the extending portion has an insulating portion that overlaps the projecting surface portions of the semiconductor integrated circuit element and the second lead line in a plan view.
本発明の液晶表示装置は、一面に複数の画素部を有する第１の基板と、その第１の基板の一面とそれに対向する面との間で液晶を挟持する第２の基板と、第１の基板の一面の端部が第２の基板から突出している突出面に設けられている画素部を駆動するための半導体集積回路素子と、突出面の端部に設置されている信号配線及び接地配線を有するフレキシブル回路基板と、半導体集積回路素子と信号配線とを電気的に接続するように突出面に形成されている第１の引出線と、半導体集積回路素子と画素部とを電気的に接続するように突出面から画素部にかけて形成されている第２の引出線と、を有する液晶表示装置であって、フレキシブル回路基板は、半導体集積回路素子側の部位に、第１の引出線に平面視で重なるとともに半導体集積回路素子及び第２の引出線の突出面の部位に平面視で重ならない電磁遮蔽導電膜を備えた延出部を有しており、電磁遮蔽導電膜は、接地配線に電気的に接続されていることから、以下のような効果を奏する。即ち、フレキシブル回路基板の延出部の電磁遮蔽導電膜は、第１の引出線に平面視で重なるが、電磁遮蔽導電膜による電磁遮蔽効果が発現しにくい半導体集積回路素子及び第２の引出線の突出面の部位には平面視で重ならないために、電磁遮蔽導電膜及び延出部を小型化及び軽量化することができる。従って、小型化及び軽量化されたフレキシブル回路基板を用いて半導体集積回路素子の第１の引出線に対して効果的な電磁遮蔽効果を発現して、半導体集積回路素子の誤動作を抑制し得る液晶表示装置とすることができる。また、簡易な構成のフレキシブル回路基板とすることにより液晶表示装置の製造コストを低減化することができる。 The liquid crystal display device of the present invention includes a first substrate having a plurality of pixel portions on one surface, a second substrate for sandwiching liquid crystal between one surface of the first substrate and the surface facing the first substrate, A semiconductor integrated circuit element for driving a pixel portion provided on a protruding surface in which one end of the substrate protrudes from the second substrate, and a signal wiring and a ground installed at the end of the protruding surface A flexible circuit board having wiring, a first lead line formed on the projecting surface so as to electrically connect the semiconductor integrated circuit element and the signal wiring, and the semiconductor integrated circuit element and the pixel portion are electrically connected And a second lead line formed from the projecting surface to the pixel portion so as to be connected, wherein the flexible circuit board is provided at a portion on the semiconductor integrated circuit element side and connected to the first lead line. Semiconductor integrated circuits that overlap in plan view The projecting surface portion of the child and the second lead line has an extending portion having an electromagnetic shielding conductive film that does not overlap in plan view, and the electromagnetic shielding conductive film is electrically connected to the ground wiring. Therefore, the following effects are obtained. That is, the electromagnetic shielding conductive film in the extension portion of the flexible circuit board overlaps the first lead line in a plan view, but the semiconductor integrated circuit element and the second lead line that hardly exhibit the electromagnetic shielding effect by the electromagnetic shielding conductive film. Therefore, the electromagnetic shielding conductive film and the extending portion can be reduced in size and weight. Accordingly, a liquid crystal capable of suppressing an erroneous operation of the semiconductor integrated circuit element by expressing an effective electromagnetic shielding effect on the first lead line of the semiconductor integrated circuit element by using a flexible circuit board reduced in size and weight. It can be a display device. In addition, the manufacturing cost of the liquid crystal display device can be reduced by using a flexible circuit board with a simple configuration.
本発明の液晶表示装置は、好ましくは、第２の基板は、液晶側の面と対向する表示側の面に透明導電膜が形成されており、フレキシブル回路基板は、延出部に、一端側が電磁遮蔽導電膜に電気的に接続され他端側が透明導電膜に電気的に接続されている中継導電膜を備えた他の延出部が形成されていることから、例えば帯電した液晶表示パネルの電荷を透明導電膜、中継導電膜、電磁遮蔽導電膜及び接地配線を通して外部に逃がすことができ、ＥＳＤ対策に有効な液晶表示装置となる。 In the liquid crystal display device of the present invention, preferably, the second substrate has a transparent conductive film formed on the display side surface facing the liquid crystal side surface, and the flexible circuit board has an extension portion at one end side. Since another extension portion having a relay conductive film electrically connected to the electromagnetic shielding conductive film and having the other end side electrically connected to the transparent conductive film is formed, for example, a charged liquid crystal display panel The charge can be released to the outside through the transparent conductive film, the relay conductive film, the electromagnetic shielding conductive film, and the ground wiring, and the liquid crystal display device is effective for ESD countermeasures.
また本発明の液晶表示装置は、好ましくは、延出部は、半導体集積回路素子及び第２の引出線の突出面の部位に平面視で重なる絶縁部を有していることから、帯電した液晶表示パネルの電荷が半導体集積回路素子に放電されて半導体集積回路部が破損することを抑えることができる。即ち、帯電した液晶表示パネルの電荷が放電されたとしても、電荷は前記絶縁部に移り電磁遮蔽導電膜を介して減衰するので、半導体集積回路素子に電荷が放電されることを抑えることができる。 In the liquid crystal display device of the present invention, it is preferable that the extending portion has an insulating portion that overlaps with the semiconductor integrated circuit element and the projecting surface portion of the second lead line in a plan view. It can be suppressed that the charge of the display panel is discharged to the semiconductor integrated circuit element and the semiconductor integrated circuit portion is damaged. That is, even if the charge of the charged liquid crystal display panel is discharged, the charge is transferred to the insulating portion and attenuated through the electromagnetic shielding conductive film, so that it is possible to prevent the charge from being discharged to the semiconductor integrated circuit element. .
以下、本発明のＬＣＤの実施の形態について、図面を参照しながら説明する。但し、以下で参照する各図は、本発明のＬＣＤの実施の形態における構成部材のうち、本発明のＬＣＤを説明するための主要部を示している。従って、本発明に係るＬＣＤは、図に示されていない回路基板、配線導体、制御ＩＣ，ＬＳＩ等の周知の構成部材を備えていてもよい。 Embodiments of an LCD according to the present invention will be described below with reference to the drawings. However, each drawing referred to below shows a main part for explaining the LCD of the present invention among the constituent members in the embodiment of the LCD of the present invention. Therefore, the LCD according to the present invention may include well-known components such as a circuit board, a wiring conductor, a control IC, and an LSI that are not shown in the drawing.
図１（ａ），（ｂ）は、本発明のＬＣＤについて実施の形態の１例を示す図であり、（ａ）はＦＰＣの折り返す前の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図、（ｂ）はＦＰＣの折り返した後の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図である。また図２は、図１（ｂ）の状態のＬＣＤの側断面図である。図１、図２に示すように、本発明のＬＣＤは、一面に複数の画素部２４を有する第１の基板１と、その第１の基板１の一面とそれに対向する面との間で液晶２８を挟持する第２の基板２と、第１の基板１の前記一面が第２の基板２から突出している突出面１ａに設けられている画素部２４を駆動するための駆動用ＩＣ，ＬＳＩ等の半導体集積回路素子４と、突出面１ａの端部に設置されている信号配線５ａ及び接地配線７を有するＦＰＣ５と、半導体集積回路素子４と信号配線５ａとを電気的に接続するように突出面１ａに形成されている第１の引出線９と、半導体集積回路素子４と画素部２４とを電気的に接続するように突出面１ａから画素部４にかけて形成されている第２の引出線１０と、を有するＬＣＤであって、ＦＰＣ５は、半導体集積回路素子４側の部位に、第１の引出線９に平面視で重なるとともに半導体集積回路素子４及び第２の引出線１０の突出面１ａの部位に平面視で重ならない電磁遮蔽導電膜８を備えた延出部６を有しており、電磁遮蔽導電膜８は、接地配線７に電気的に接続されている構成である。 FIGS. 1A and 1B are diagrams showing an example of an embodiment of an LCD according to the present invention, and FIG. 1A is a semiconductor integrated circuit element of a liquid crystal display panel showing an extended portion before the FPC is folded back. FIG. 7B is a plan view of the part of the semiconductor integrated circuit element of the liquid crystal display panel and the FPC showing the extension part after the FPC is folded back. FIG. 2 is a side sectional view of the LCD in the state shown in FIG. As shown in FIGS. 1 and 2, the LCD of the present invention includes a first substrate 1 having a plurality of pixel portions 24 on one surface, and a liquid crystal between one surface of the first substrate 1 and a surface facing the first substrate 1. And a driving IC or LSI for driving the pixel portion 24 provided on the second substrate 2 sandwiching 28 and the protruding surface 1a where the one surface of the first substrate 1 protrudes from the second substrate 2. The semiconductor integrated circuit element 4 and the like, the FPC 5 having the signal wiring 5a and the ground wiring 7 installed at the end of the protruding surface 1a, and the semiconductor integrated circuit element 4 and the signal wiring 5a are electrically connected. The first lead line 9 formed on the projecting surface 1a and the second lead formed from the projecting surface 1a to the pixel unit 4 so as to electrically connect the semiconductor integrated circuit element 4 and the pixel unit 24. Line 10 and FPC 5 is a semiconductor The electromagnetic shielding conductive film 8 that overlaps the first lead wire 9 in a plan view and overlaps the projecting surface 1a of the semiconductor integrated circuit element 4 and the second lead wire 10 in a plan view on the product circuit element 4 side. The electromagnetic shielding conductive film 8 is configured to be electrically connected to the ground wiring 7.
上記の構成により、ＦＰＣ５の延出部６の電磁遮蔽導電膜８は、第１の引出線９に平面視で重なるが、電磁遮蔽導電膜８による電磁遮蔽効果が発現しにくい半導体集積回路素子４及び第２の引出線１０の突出面１ａの部位には平面視で重ならないために、電磁遮蔽導電膜８及び延出部６を小型化及び軽量化することができる。従って、小型化及び軽量化されたＦＰＣ５を用いて半導体集積回路素子４の第１の引出線９に対して効果的な電磁遮蔽効果を発現して、半導体集積回路素子４の誤動作を抑制し得るＬＣＤとすることができる。また、簡易な構成のＦＰＣ５とすることによりＬＣＤの製造コストを低減化することができる。なお、一般に、第１の引出線９によって伝送される信号の周波数は６０ＭＨｚ程度以上であり、第２の引出線１０によって伝送される信号の周波数は、例えばＬＣＤがＸＧＡの解像度であれば５０ｋＨｚ程度であり、第１の引出線９の方が第２の引出線１０と比較して外部の電磁的ノイズが重畳しやすい。なお、図１の構成において延出部６は、折り返されることによって、第１の引出線９に平面視で重なるとともに半導体集積回路素子４及び第２の引出線１０の突出面１ａの部位に平面視で重ならない電磁遮蔽導電膜８を有する構成とされているが、必ずしも折り返すものである必要はなく、延出部６はＦＰＣ５の半導体集積回路素子４側の端部がそのまま延出したものであってもよい。 With the above configuration, the electromagnetic shielding conductive film 8 of the extending portion 6 of the FPC 5 overlaps the first lead wire 9 in plan view, but the semiconductor integrated circuit element 4 in which the electromagnetic shielding effect by the electromagnetic shielding conductive film 8 is difficult to be exhibited. And since it does not overlap with the site | part of the protrusion surface 1a of the 2nd leader line 10 by planar view, the electromagnetic shielding electrically conductive film 8 and the extension part 6 can be reduced in size and weight. Therefore, an effective electromagnetic shielding effect can be exerted on the first lead wire 9 of the semiconductor integrated circuit element 4 by using the FPC 5 that is reduced in size and weight, and malfunction of the semiconductor integrated circuit element 4 can be suppressed. It can be an LCD. Further, the manufacturing cost of the LCD can be reduced by using the FPC 5 having a simple configuration. In general, the frequency of the signal transmitted by the first lead line 9 is about 60 MHz or more, and the frequency of the signal transmitted by the second lead line 10 is, for example, about 50 kHz if the LCD has an XGA resolution. Thus, the first lead wire 9 is more likely to superimpose external electromagnetic noise than the second lead wire 10. In the configuration of FIG. 1, the extension portion 6 is folded back so as to overlap the first lead wire 9 in a plan view and to be flat on the projecting surface 1 a of the semiconductor integrated circuit element 4 and the second lead wire 10. The electromagnetic shielding conductive film 8 that does not overlap visually is configured, but it does not necessarily have to be folded back, and the extension portion 6 is an extension of the end portion of the FPC 5 on the semiconductor integrated circuit element 4 side as it is. There may be.
また本発明のＬＣＤは詳細には以下のような構成を有する。ＴＦＴ素子２２を含む画素部２４が多数形成された第１の基板１としてのアレイ側基板と、カラーフィルタ及びブラックマトリクスが形成された第２の基板２としてのカラーフィルタ側基板とを互いに対向させて、それらの基板を所定の間隔でもって貼り合わせ、それらの基板間に液晶２８を充填、封入させることによって作製される。また、一般的に、カラーフィルタ側基板は、ＴＦＴ素子２２及び画素電極２３に対向する側の面（液晶２８側の面）の全面に、画素電極２３との間で液晶２８に印加する垂直電界を形成するための共通電極２７が形成されている。また、ＬＣＤが画素電極２３と共通電極との間で液晶２８に印加する横電界を形成するＩＰＳ（In-Plane Switching）方式のＬＣＤである場合、共通電極２７はアレイ側基板の画素電極２３と同じ面内に形成される。ＬＣＤが画素電極２３と共通電極２７との間で液晶２８に印加する端部電界を形成するＦＦＳ（Fringe Field Switching）方式のＬＣＤである場合、共通電極２７はアレイ側基板の画素部２４に画素電極２３の上方または下方に絶縁層を挟んで形成される。また、カラーフィルタ側基板の液晶２８側の面には、それぞれの画素部２４に対応する赤（Ｒ）、緑（Ｇ）、青（Ｂ）のカラーフィルタ２５が形成されており、それぞれの画素部２４を通過する光が相互に干渉することを防ぐブラックマトリクスがカラーフィルタ２５の外周を囲むように形成されている。なお、図４において、２６はカラーフィルタ２５と共通電極２７との間に介在するように形成されている絶縁層、３はカラーフィルタ側基板の表示側の面に形成されたＩＴＯ（Indium Tin Oxide）等から成る透明導電膜である。また、図２、図６に示すＬＣＤは、カラーフィルタ側基板のＴＦＴ素子２２及び画素電極２３に対向する側の面（液晶２８側の面）の全面に、画素電極２３との間で液晶２８に印加する垂直電界を形成するための共通電極２７が形成されているＴＮ型のものであり、電磁遮蔽膜としての透明導電膜３を有していない。一方、図４、図７（ｂ）に示すＬＣＤは、共通電極２７がアレイ側基板の画素電極２３と同じ面内に形成されているＩＰＳ型のものであり、電磁遮蔽膜としての透明導電膜３を有している。 The LCD of the present invention has the following configuration in detail. An array side substrate as a first substrate 1 on which a large number of pixel portions 24 including TFT elements 22 are formed and a color filter side substrate as a second substrate 2 on which color filters and a black matrix are formed are opposed to each other. The substrates are bonded together at a predetermined interval, and the liquid crystal 28 is filled and sealed between the substrates. In general, the color filter side substrate has a vertical electric field applied to the liquid crystal 28 between the pixel electrode 23 and the entire surface on the side facing the TFT element 22 and the pixel electrode 23 (surface on the liquid crystal 28 side). A common electrode 27 is formed to form When the LCD is an IPS (In-Plane Switching) type LCD that forms a lateral electric field applied to the liquid crystal 28 between the pixel electrode 23 and the common electrode, the common electrode 27 is connected to the pixel electrode 23 on the array side substrate. Formed in the same plane. When the LCD is an FFS (Fringe Field Switching) type LCD that forms an edge electric field applied to the liquid crystal 28 between the pixel electrode 23 and the common electrode 27, the common electrode 27 is connected to the pixel portion 24 of the array side substrate. An insulating layer is sandwiched above or below the electrode 23. Further, red (R), green (G), and blue (B) color filters 25 corresponding to the respective pixel portions 24 are formed on the surface of the color filter side substrate on the liquid crystal 28 side. A black matrix that prevents light passing through the portion 24 from interfering with each other is formed so as to surround the outer periphery of the color filter 25. In FIG. 4, reference numeral 26 denotes an insulating layer formed so as to be interposed between the color filter 25 and the common electrode 27, and reference numeral 3 denotes ITO (Indium Tin Oxide) formed on the display side surface of the color filter side substrate. ) And the like. The LCD shown in FIGS. 2 and 6 has a liquid crystal 28 between the pixel electrode 23 and the entire surface of the color filter side substrate facing the TFT element 22 and the pixel electrode 23 (surface on the liquid crystal 28 side). This is a TN type in which a common electrode 27 for forming a vertical electric field applied to is formed, and does not have the transparent conductive film 3 as an electromagnetic shielding film. On the other hand, the LCD shown in FIGS. 4 and 7B is an IPS type in which the common electrode 27 is formed in the same plane as the pixel electrode 23 of the array side substrate, and is a transparent conductive film as an electromagnetic shielding film. 3.
この透明導電膜３は、インジウム錫酸化物（ＩＴＯ）、インジウム亜鉛酸化物（ＩＺＯ）、酸化珪素を添加したインジウム錫酸化物（ＩＴＳＯ）、酸化亜鉛（ＺｎＯ）、リンやボロンを含むシリコン（Ｓｉ）等の透光性を有する導電性材料から成る。 The transparent conductive film 3 includes indium tin oxide (ITO), indium zinc oxide (IZO), indium tin oxide added with silicon oxide (ITSO), zinc oxide (ZnO), silicon containing phosphorus and boron (Si ) And the like.
また、アレイ側基板の液晶４８側の面におけるカラーフィルタ側基板から突出している突出面１ａには、液晶表示パネルの画像表示の駆動制御等を行う駆動用ＩＣ，ＬＳＩ等の半導体集積回路素子４がチップオングラス（Chip On Glass ：ＣＯＧ）方式等の実装方法により搭載されており、さらに半導体集積回路素子４に外部から駆動信号、制御信号等を入出力するＦＰＣ５が、突出面１ａの端部に設置されている。突出面１ａは、半導体集積回路素子４からＦＰＣ５の信号配線５ａに電気的に接続される電極端子にかけてＦＰＣ５側の第１の引出線９が形成されており、半導体集積回路素子４からＴＦＴ素子４２、画素電極４３にかけて液晶表示パネル側の第２の引出線１０が形成されている。 Further, a semiconductor integrated circuit element 4 such as a driving IC or LSI that performs drive control of image display of the liquid crystal display panel is provided on the protruding surface 1a protruding from the color filter side substrate on the surface on the liquid crystal 48 side of the array side substrate. Is mounted by a mounting method such as a chip on glass (COG) method, and the FPC 5 that inputs and outputs drive signals, control signals, and the like to the semiconductor integrated circuit element 4 from the outside is provided at the end of the protruding surface 1a. Is installed. A first lead line 9 on the FPC 5 side is formed on the projecting surface 1 a from the semiconductor integrated circuit element 4 to an electrode terminal electrically connected to the signal wiring 5 a of the FPC 5, and from the semiconductor integrated circuit element 4 to the TFT element 42. The second lead line 10 on the liquid crystal display panel side is formed over the pixel electrode 43.
本発明のＬＣＤは、延出部６を折り返す前は、第１の引出線９が外部から視認できるために、ＦＰＣ５の信号配線５ａと第１の引出線９のＦＰＣ５側の端部にある電極端子とを位置合わせして電気的に接続することが容易になり、ＦＰＣ５の突出面１ａへの設置に有利である。そして、ＦＰＣ５を突出面１ａに設置した後に延出部６を折り返すことにより、電磁遮蔽導電膜８による第１の引出線９に対する電磁遮蔽効果を発現させ得る。また延出部６は、折り返された後にその先端部をＦＰＣ５の本体部に接着剤等によって固定して、折り返された延出部６の状態を保持することもできる。 In the LCD of the present invention, since the first lead wire 9 can be visually recognized from the outside before the extension portion 6 is folded, the signal wiring 5a of the FPC 5 and the electrodes at the end portion of the first lead wire 9 on the FPC 5 side are provided. It is easy to align and electrically connect the terminals, which is advantageous for installation on the protruding surface 1a of the FPC 5. And the electromagnetic shielding effect with respect to the 1st leader line 9 by the electromagnetic shielding electrically conductive film 8 can be expressed by folding the extension part 6 after installing FPC5 in the protrusion surface 1a. Further, after the extension part 6 is folded back, the tip part thereof can be fixed to the main body part of the FPC 5 with an adhesive or the like, and the state of the folded extension part 6 can be maintained.
またＦＰＣ５は、好適には矩形状等の多角形状であり、半導体集積回路素子４側の一辺の端部に延出部６があることがよい。延出部６は、折り返す前は前記一辺にほぼ平行な方向で第１の引出線９から離れる方向に延びるように形成されており、折り返されることによって、平面視で第１の引出線９に重なるように位置する。 The FPC 5 preferably has a polygonal shape such as a rectangular shape, and the extending portion 6 may be provided at the end of one side of the semiconductor integrated circuit element 4 side. The extension portion 6 is formed so as to extend in a direction away from the first lead line 9 in a direction substantially parallel to the one side before being folded back, and is folded back to the first lead line 9 in plan view. Located so as to overlap.
またＦＰＣ５は、延出部６の折り返し部における電磁遮蔽導電膜８に、円形、楕円形、四角形等の平面視形状の電磁遮蔽導電膜８の非形成部を折り返し線上に断続的に形成することがよい。この場合、延出部６の折り返しが容易になり、折り返しの作業性が向上する。さらに、接地配線７と電磁遮蔽導電膜８の接続部であって折り返し線近傍の接地配線７側に、電磁遮蔽導電膜８の部分非形成部を形成することがよい。すなわち、電磁遮蔽導電膜８の接地配線７側の根元部を部分的に細くなるように形成することがよい。この場合、延出部６の折り返しがより容易になり、折り返しの作業性がより向上する。 Further, the FPC 5 intermittently forms a non-formation portion of the electromagnetic shielding conductive film 8 having a planar view shape such as a circle, an ellipse, or a rectangle on the folded line in the electromagnetic shielding conductive film 8 in the folded portion of the extending portion 6. Is good. In this case, the extension portion 6 can be easily folded, and the workability of the folding can be improved. Furthermore, it is preferable to form a part where the electromagnetic shielding conductive film 8 is not formed on the side of the ground wiring 7 in the vicinity of the return line, which is a connection portion between the ground wiring 7 and the electromagnetic shielding conductive film 8. That is, it is preferable to form the base portion of the electromagnetic shielding conductive film 8 on the ground wiring 7 side so as to be partially narrowed. In this case, the extension portion 6 can be folded back more easily, and the folding workability can be further improved.
本発明のＬＣＤにおける電磁遮蔽導電膜８は、アルミニウム（Ａｌ），銅（Ｃｕ），銀（Ａｇ），ニッケル（Ｎｉ），クロム（Ｃｒ），亜鉛（Ｚｎ），鉄（Ｆｅ），タンタル（Ｔａ），タングステン（Ｗ），チタン（Ｔｉ），モリブデン（Ｍｏ）等から選ばれた元素から成る金属材料、またはこれらの元素を主成分として含む、ステンレススチール，銅亜鉛（Ｃｕ−Ｚｎ）合金等の合金材料を用いて形成される。また電磁遮蔽導電膜８は、透光性が必要な場合、インジウム錫酸化物（ＩＴＯ）、インジウム亜鉛酸化物（ＩＺＯ）、酸化珪素を添加したインジウム錫酸化物（ＩＴＳＯ）、酸化亜鉛（ＺｎＯ）、リンやボロンを含むシリコン（Ｓｉ）等の透光性を有する導電性材料を用いることができる。 The electromagnetic shielding conductive film 8 in the LCD of the present invention includes aluminum (Al), copper (Cu), silver (Ag), nickel (Ni), chromium (Cr), zinc (Zn), iron (Fe), tantalum (Ta). ), Tungsten (W), titanium (Ti), molybdenum (Mo), etc., or a metal material comprising these elements as a main component, such as stainless steel, copper zinc (Cu—Zn) alloy, etc. It is formed using an alloy material. When the electromagnetic shielding conductive film 8 requires translucency, indium tin oxide (ITO), indium zinc oxide (IZO), indium tin oxide added with silicon oxide (ITSO), zinc oxide (ZnO). Alternatively, a light-transmitting conductive material such as silicon (Si) containing phosphorus or boron can be used.
また電磁遮蔽導電膜８は、厚み５μｍ〜５０μｍ程度の金属箔の形態が一例として考えられる。あるいは薄膜の形態であってもよい。電磁遮蔽導電膜８が薄膜から成る場合、スパッタリング法、ＣＶＤ法等の薄膜形成法、めっき法等によって形成し得る。 Further, the electromagnetic shielding conductive film 8 can be considered as an example of a metal foil having a thickness of about 5 μm to 50 μm. Or the form of a thin film may be sufficient. When the electromagnetic shielding conductive film 8 is formed of a thin film, it can be formed by a thin film forming method such as a sputtering method or a CVD method, a plating method, or the like.
また電磁遮蔽導電膜８は、ポリエチレンテレフタレート（ＰＥＴ），アクリル樹脂，ポリイミド，ポリアミド，ポリイミドアミド，ベンゾシクロブテン等の樹脂絶縁材料から成る絶縁シートの内部に層状に形成されていてもよく、または箔状の電磁遮蔽導電膜８あるいは薄膜状の電磁遮蔽導電膜８が絶縁シートの表面に設けられていてもよい。電磁遮蔽導電膜８が絶縁シートの表面に設けられている場合、外部の電磁的ノイズを電磁遮蔽するためには、絶縁シートの第１の引出線９側の面と対向する面（図２では上面）に電磁遮蔽導電膜８が設けられていることがよい。 In addition, the electromagnetic shielding conductive film 8 may be formed in a layer form inside an insulating sheet made of a resin insulating material such as polyethylene terephthalate (PET), acrylic resin, polyimide, polyamide, polyimide amide, benzocyclobutene, or foil. An electromagnetic shielding conductive film 8 or a thin electromagnetic shielding conductive film 8 may be provided on the surface of the insulating sheet. In the case where the electromagnetic shielding conductive film 8 is provided on the surface of the insulating sheet, in order to electromagnetically shield external electromagnetic noise, the surface facing the surface of the insulating sheet on the first lead wire 9 side (in FIG. 2) An electromagnetic shielding conductive film 8 is preferably provided on the upper surface.
図３（ａ），（ｂ）は、本発明のＬＣＤについて実施の形態の他例を示す図であり、（ａ）はＦＰＣの折り返す前の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図、（ｂ）はＦＰＣの折り返した後の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図である。図４は、図３（ｂ）の状態のＬＣＤの側断面図である。図３、図４に示すように、本発明のＬＣＤは、第２の基板２は、液晶２８側の面と対向する表示側の面に透明導電膜３が形成されており、ＦＰＣ５は、延出部６に、一端側が電磁遮蔽導電膜８に電気的に接続され他端側が透明導電膜３に電気的に接続されている中継導電膜１２を備えた他の延出部１１が形成されていることが好ましい。この場合、例えば帯電した液晶表示パネルの電荷を透明導電膜３、中継導電膜１２、電磁遮蔽導電膜８及び接地配線７を通して外部に逃がすことができ、ＥＳＤ対策に有効なＬＣＤとなる。 FIGS. 3A and 3B are diagrams showing another example of the embodiment of the LCD of the present invention, and FIG. 3A is a semiconductor integrated circuit element of a liquid crystal display panel showing an extended portion before the FPC is folded back. FIG. 7B is a plan view of the part of the semiconductor integrated circuit element of the liquid crystal display panel and the FPC showing the extension part after the FPC is folded back. FIG. 4 is a side sectional view of the LCD in the state of FIG. As shown in FIG. 3 and FIG. 4, in the LCD of the present invention, the second substrate 2 has a transparent conductive film 3 formed on the display side surface facing the liquid crystal 28 side surface, and the FPC 5 extends. Another extension portion 11 having a relay conductive film 12 having one end side electrically connected to the electromagnetic shielding conductive film 8 and the other end side electrically connected to the transparent conductive film 3 is formed on the output portion 6. Preferably it is. In this case, for example, the charge of the charged liquid crystal display panel can be released to the outside through the transparent conductive film 3, the relay conductive film 12, the electromagnetic shielding conductive film 8, and the ground wiring 7, and the LCD is effective for ESD countermeasures.
他の延出部１１に備えられた中継導電膜１２は、電磁遮蔽導電膜８と同様の材料から成り、電磁遮蔽導電膜８と同様の構成として形成し得る。中継導電膜１２の液晶表示パネル側の先端部は、ＡＣＦ，導電性樹脂等から成る導電接続部材１３を介して透明導電膜３に電気的に接続されている。 The relay conductive film 12 provided in the other extending portions 11 is made of the same material as that of the electromagnetic shielding conductive film 8 and can be formed in the same configuration as the electromagnetic shielding conductive film 8. The front end portion of the relay conductive film 12 on the liquid crystal display panel side is electrically connected to the transparent conductive film 3 via a conductive connection member 13 made of ACF, conductive resin or the like.
図５（ａ），（ｂ）は、本発明のＬＣＤについて実施の形態の他例を示す図であり、（ａ）はＦＰＣの折り返す前の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図、（ｂ）はＦＰＣの折り返した後の延出部を示す液晶表示パネルの半導体集積回路素子の部位及びＦＰＣの平面図である。図６は、図５（ｂ）の状態のＬＣＤの側断面図である。図５、図６に示すように、本発明のＬＣＤは、延出部１６は、半導体集積回路素子４及び第２の引出線１０の突出面１ａの部位に平面視で重なる絶縁部16aを有していることから、帯電した液晶表示パネルの電荷が半導体集積回路素子４に放電されて半導体集積回路部が破損することを抑えることができる。即ち、帯電した液晶表示パネルの電荷が放電されたとしても、電荷は絶縁部16aに移り電磁遮蔽導電膜８を介して減衰するので、半導体集積回路素子４に電荷が放電されることを抑えることができる。 FIGS. 5A and 5B are diagrams showing another example of the embodiment of the LCD of the present invention, and FIG. 5A is a semiconductor integrated circuit element of a liquid crystal display panel showing an extended portion before the FPC is folded back. FIG. 7B is a plan view of the part of the semiconductor integrated circuit element of the liquid crystal display panel and the FPC showing the extension part after the FPC is folded back. FIG. 6 is a side sectional view of the LCD in the state of FIG. As shown in FIGS. 5 and 6, in the LCD of the present invention, the extending portion 16 has an insulating portion 16 a that overlaps the portions of the semiconductor integrated circuit element 4 and the protruding surface 1 a of the second lead wire 10 in plan view. Therefore, it is possible to prevent the charge of the charged liquid crystal display panel from being discharged to the semiconductor integrated circuit element 4 and damaging the semiconductor integrated circuit portion. That is, even if the charge of the charged liquid crystal display panel is discharged, the charge is transferred to the insulating portion 16a and attenuated through the electromagnetic shielding conductive film 8, so that the discharge of the charge to the semiconductor integrated circuit element 4 is suppressed. Can do.
延出部１６の少なくとも絶縁部16aは、透光性を有していることが好ましい。この場合、半導体集積回路素子４及び第２の引出線１０を外部から視認することができ、ＬＣＤの点検、修理、保守に有利である。 It is preferable that at least the insulating part 16a of the extending part 16 has translucency. In this case, the semiconductor integrated circuit element 4 and the second lead line 10 can be visually recognized from the outside, which is advantageous for inspection, repair, and maintenance of the LCD.
なお、本発明のＬＣＤは、上記実施の形態に限定されるものではなく、適宜の設計的な変更、改良を含んでいてもよい。 The LCD of the present invention is not limited to the above-described embodiment, and may include appropriate design changes and improvements.
本発明のＬＣＤは各種の電子機器に適用できる。その電子機器としては、自動車経路誘導システム（カーナビゲーションシステム）、船舶経路誘導システム、航空機経路誘導システム、スマートフォン端末、携帯電話、タブレット端末、パーソナルデジタルアシスタント（ＰＤＡ）、ビデオカメラ、デジタルスチルカメラ、電子手帳、電子書籍、電子辞書、パーソナルコンピュータ、複写機、ゲーム機器の端末装置、テレビジョン、商品表示タグ、価格表示タグ、産業用のプログラマブル表示装置、カーオーディオ、デジタルオーディオプレイヤー、ファクシミリ、プリンター、コピー機、現金自動預け入れ払い機（ＡＴＭ）、自動販売機、ヘッドアップディスプレイ装置、プロジェクタ装置、デジタル表示式腕時計、頭部装着型画像表示装置（Head Mounted Display device ：ＨＭＤ）などがある。 The LCD of the present invention can be applied to various electronic devices. The electronic devices include automobile route guidance system (car navigation system), ship route guidance system, aircraft route guidance system, smartphone terminal, mobile phone, tablet terminal, personal digital assistant (PDA), video camera, digital still camera, electronic Notebook, electronic book, electronic dictionary, personal computer, copier, game device terminal, television, product display tag, price display tag, industrial programmable display, car audio, digital audio player, facsimile, printer, copy Machines, automatic teller machines (ATMs), vending machines, head-up display devices, projector devices, digital display watches, head mounted display devices (HMD), etc. .
１ 第１の基板
２ 第２の基板
３ 透明導電膜
４ 半導体集積回路素子
５ ＦＰＣ
５ａ 信号配線
６ 延出部
７ 接地配線
８ 電磁遮蔽導電膜
９ 第１の引出線
１０ 第２の引出線
DESCRIPTION OF SYMBOLS 1 1st board | substrate 2 2nd board | substrate 3 Transparent conductive film 4 Semiconductor integrated circuit element 5 FPC
5a Signal wiring 6 Extension part 7 Grounding wiring 8 Electromagnetic shielding conductive film 9 First leader line 10 Second leader line
Claims (3)
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| JP2015016465A JP2016142801A (en) | 2015-01-30 | 2015-01-30 | Liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015016465A JP2016142801A (en) | 2015-01-30 | 2015-01-30 | Liquid crystal display device |
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| JP2016142801A true JP2016142801A (en) | 2016-08-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018131554A1 (en) * | 2017-01-13 | 2018-07-19 | シャープ株式会社 | Display device |
| CN108366519A (en) * | 2018-01-30 | 2018-08-03 | 深圳天珑无线科技有限公司 | A kind of shielding construction reducing display screen electromagnetic interference |
| JP2018169541A (en) * | 2017-03-30 | 2018-11-01 | 株式会社デンソー | Display device |
| JP2020067589A (en) * | 2018-10-25 | 2020-04-30 | 株式会社ジャパンディスプレイ | Display |
| CN111474750A (en) * | 2020-04-22 | 2020-07-31 | 惠州Tcl移动通信有限公司 | Display module and terminal |
| WO2022001336A1 (en) * | 2020-06-30 | 2022-01-06 | 昆山国显光电有限公司 | Display panel and manufacturing method therefor, and display device |
-
2015
- 2015-01-30 JP JP2015016465A patent/JP2016142801A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018131554A1 (en) * | 2017-01-13 | 2018-07-19 | シャープ株式会社 | Display device |
| CN110192237A (en) * | 2017-01-13 | 2019-08-30 | 夏普株式会社 | Display device |
| US10827621B2 (en) | 2017-01-13 | 2020-11-03 | Sharp Kabushiki Kaisha | Display device |
| JP2018169541A (en) * | 2017-03-30 | 2018-11-01 | 株式会社デンソー | Display device |
| CN108366519A (en) * | 2018-01-30 | 2018-08-03 | 深圳天珑无线科技有限公司 | A kind of shielding construction reducing display screen electromagnetic interference |
| JP2020067589A (en) * | 2018-10-25 | 2020-04-30 | 株式会社ジャパンディスプレイ | Display |
| JP7100559B2 (en) | 2018-10-25 | 2022-07-13 | 株式会社ジャパンディスプレイ | Display device |
| CN111474750A (en) * | 2020-04-22 | 2020-07-31 | 惠州Tcl移动通信有限公司 | Display module and terminal |
| WO2022001336A1 (en) * | 2020-06-30 | 2022-01-06 | 昆山国显光电有限公司 | Display panel and manufacturing method therefor, and display device |
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