JP2013109108A - Display device module and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress deterioration of waveform quality of data in high speed transmission of the data.SOLUTION: In a display device module 2, an optical reception part 29 is connected to a substrate for display panel 22 with an FPC30, the optical reception part 29 and the FPC30 is connected each other in a region which is a region on an outside of an upper region of a top face and on an outside of lower region of a bottom face of the substrate for display panel 22, and is a region which is opposite to a side of the substrate for display panel 22 for an end face in a connection side of the FPC30 of the substrate for display panel 22.

Description

  The present invention relates to a display device module such as a liquid crystal display module and an organic EL display module, and an electronic device including the display device module.

  For example, a mobile phone as an electronic device includes a display device module. For example, Patent Document 1 discloses a mobile phone including a liquid crystal display module. In this cellular phone, a liquid crystal display panel is disposed on a base plate, a drive control circuit is disposed on the lower surface of the base plate, and the drive control circuit to the liquid crystal display panel is used for a display panel only by FPC (Flexible Printed Circuits). Data is being supplied. Specifically, an electrode pattern is formed on the upper surface of the lower glass substrate in the liquid crystal display panel, a driver chip is disposed on the electrode pattern by a COG (Chip on Glass) method, and one end of the FPC is an electrode pattern. Connected to the upper end of the liquid crystal display panel and bent from the one end to the side of the liquid crystal display panel. The other end is the drive control circuit. Connected with.

  On the other hand, in electronic devices equipped with a display device such as a mobile phone, in recent years, the progress of higher definition and higher performance of display has been remarkable. Along with this, the amount of data transmission is increased and the data transmission speed is increased in the electronic apparatus.

JP 2010-85638 A (released on April 15, 2010)

  In a configuration that performs high-speed data transmission, a differential transmission path is generally used as a high-speed transmission path. However, in the configuration in which the FPC is used as a high-speed transmission path, impedance matching is lost at the bent portion of the FPC, so that the waveform quality of the transmitted data is deteriorated and the image quality of the display image on the display device is deteriorated. . This problem becomes more prominent as data transmission becomes faster.

  Accordingly, an object of the present invention is to provide a display device module and an electronic apparatus that can suppress deterioration in waveform quality of data even when data is transmitted at high speed.

  The display device module of the present invention includes a display panel substrate on which a display panel is provided, an optical transmission unit that converts an electrical signal into an optical signal, an optical transmission medium, and an optical reception unit that converts an optical signal into an electrical signal. And an optical wiring module that transmits display panel data supplied to the display panel substrate from the optical transmission unit to the optical reception unit by light through the optical transmission medium. The light receiving portion is connected to the display panel substrate by a conductive wiring member, and the light receiving portion and the wiring member are outside the region above the upper surface of the display panel substrate and A region outside the region below the lower surface and connected to each other in a region opposite to the display panel substrate side with respect to the connection side end surface of the wiring member in the display panel substrate. It is characterized in Rukoto.

  According to the above configuration, the light receiving unit is connected to the display panel substrate by the conductive wiring member, and the light receiving unit and the wiring member are outside the region above the upper surface of the display panel substrate. And a region outside the region below the lower surface and connected to each other in a region opposite to the display panel substrate side with respect to the connection side end surface of the wiring member in the display panel substrate.

  As a result, the wiring member for connecting the optical receiver to the display panel substrate is arranged at a position below the lower surface of the display panel substrate, for example, and the optical receiver and the wiring member are connected at that position. Compared with the case where it did, it can arrange | position in the state with few bending. In addition, the optical receiving unit is disposed in the vicinity of the connection part between the display panel substrate and the wiring member, and the length of the wiring member between the optical receiving unit and the display panel substrate, that is, the path length of the electrical transmission is set. Can be shortened. In addition, even if the optical transmission unit is disposed below the lower surface of the display panel substrate and the optical transmission medium between the optical transmission unit and the optical reception unit is bent, the optical wiring Data transmitted by the module is less likely to cause waveform degradation.

  Therefore, bending of the wiring member between the optical receiver and the display panel substrate and deterioration of the waveform of the transmission data due to the electrical transmission path length are suppressed, and display panel data with a large amount of data is transmitted at high speed. Even in this case, the display panel data can be transmitted in a high quality state while suppressing the deterioration of the waveform quality.

  Moreover, a single-layer flexible printed wiring board, for example, a flexible printed wiring board having a microstrip structure can be used as the wiring member.

  In the above display device module, the wiring member is connected to the display panel substrate on the upper surface side of the display panel substrate, and is parallel to the upper surface of the display panel substrate from a connection portion with the display panel substrate. In addition, the optical receiving unit may have an extending part extending in the region where the optical receiving part is disposed, and the optical receiving part may be connected to the wiring member in the extending part.

  According to the above configuration, the light receiving portion extends from the connection portion with the display panel substrate to the region where the light receiving portion is disposed in parallel with the upper surface of the display panel substrate. It is connected to the wiring member. As a result, the wiring member between the light receiving unit and the display panel substrate is not bent. Therefore, it is possible to further reliably suppress the deterioration of the waveform of the transmission data caused by the bending of the wiring member between the light receiving unit and the display panel substrate.

  In the above display device module, the light receiving unit may be disposed on a lower surface side of the extending portion and connected to the wiring member on a lower surface of the extending portion.

  According to the above configuration, the optical receiving unit is disposed on the lower surface side of the extending portion and is connected to the wiring member on the lower surface of the extending portion, so that the thickness of the display panel on the front surface is increased. Can be prevented.

  In addition, since the light receiving unit is disposed in the area of the lower surface of the extending portion and the lower surface of the display device module, the space can be effectively used.

  In the above display device module, the wiring member is formed of a flexible printed wiring board, and extends in a direction opposite to a connection portion with respect to the display panel substrate from a connection portion with the light receiving portion, and is connected to a connector. The connector and the optical transmission unit are arranged at a position below the lower surface of the display panel substrate, and the first transmission by the wiring member from the optical wiring module and the optical reception unit to the display panel substrate is performed. In the path, the first data of the display panel data is transmitted, and in the second transmission path by the wiring member from the connector to the display panel substrate, the first of the display panel data is transmitted. Two data may be transmitted.

  According to said structure, the wiring member consists of a flexible printed wiring board, and the edge part on the opposite side to the connection part to the board | substrate for display panels is connected with a connector. The optical transmitter of the connector and the optical wiring module is positioned below the lower surface of the display panel substrate, that is, the position opposite to the upper surface of the display panel substrate in the direction perpendicular to the lower surface of the display panel substrate. Placed in.

  In the first transmission path by the wiring member from the optical wiring module and the light receiving unit to the display panel substrate, the first data of the display panel data is transmitted. The first data can be image data or high-speed signals in the display panel data. On the other hand, in the second transmission path by the wiring member from the connector to the display panel substrate, the second data of the display panel data is transmitted. This second data can be a control signal or a low-speed signal for displaying image data on the display panel among the display panel data.

  Therefore, of the display panel data, the waveform (the image data or the high-speed signal) having a large influence on the display quality when the waveform is likely to deteriorate due to the transmission is used as the first data in the first transmission path. Can be transmitted. Further, among the display panel data, a second waveform is a data (control signal or low-speed signal for displaying image data on the display panel) that is less likely to be deteriorated by transmission and has little influence on display quality when the waveform deteriorates. Can be transmitted through the second transmission path.

  Thereby, the display panel data can be supplied to the display panel substrate in a high-quality state in which deterioration of the waveform quality is suppressed as the entire display panel data.

  Unlike the configuration of Patent Document 1, most of the FPC (Flexible Printed Circuit Board) only needs to transmit the second data, so the material of the FPC can be freely selected without paying attention to the deterioration of the waveform quality. It is possible to relax the restriction on the radius of curvature of the FPC.

  In the above display device module, the light transmission unit is a region below a lower surface of the display panel substrate, and is for the display panel with respect to a connection side end surface of the wiring member in the display panel substrate. The optical transmission medium may be arranged in a region on the substrate side and extend from a side surface of the optical receiver that is opposite to the display panel substrate side to reach the optical transmitter.

  According to said structure, an optical transmission part is an area | region below the lower surface of the display panel board | substrate, Comprising: In the area | region of the display panel board | substrate side with respect to the connection side end surface of the wiring member in a display panel board | substrate. The optical transmission medium arranged extends from a side surface of the optical receiver that is opposite to the display panel substrate side, and reaches the optical transmitter.

  Therefore, in an electronic device including a display device module, for example, a mobile phone, the first substrate is disposed below the display panel substrate, and the first transmitter is attached to the lower surface of the first substrate. The substrate can be extended to a position below the optical receiver. Thereby, the mounting area of the first substrate can be increased. Further, as described in Patent Document 1, the display driver, the reception IC, and the light receiving element are arranged in this order from the display panel side, and the distance between the display driver and the reception IC can be further shortened, and waveform deterioration is further reduced. Can be suppressed.

  The display device module has a configuration in which a reinforcing member is provided in a region corresponding to a mounting region of the light receiving unit on a surface opposite to a surface connected to the light receiving unit of the wiring member. It is good.

  According to said structure, the reinforcement member is provided in the area | region corresponding to the attachment area | region of the optical receiving part in the surface on the opposite side to the surface connected to the optical receiving part of the member for wiring. Thereby, it is possible to prevent a connection failure between the wiring member and the optical receiver. In particular, even when an FPC (flexible printed wiring board) that is easy to handle and has a high degree of freedom is used as a wiring member, the reinforcing member reliably prevents the occurrence of poor connection between the FPC and the optical receiver. be able to.

  The display device module has a configuration in which a metal member is provided in a region corresponding to a mounting region of the light receiving unit on a surface opposite to a surface connected to the light receiving unit of the wiring member. It is good.

  According to said structure, the metal member is provided in the area | region corresponding to the attachment area | region of the optical receiving part in the surface on the opposite side to the surface connected to the optical receiving part of the member for wiring. Therefore, the metal member can block noise radiated from the FPC and the optical receiver, and can suppress a situation in which the noise adversely affects other electronic components such as a display driver, an antenna, or a wireless IC. Further, if the metal member is grounded, the noise blocking function can be further enhanced.

  In the above display device module, the end of the wiring member on the display panel substrate side is disposed on the upper surface of the display panel substrate and is connected to the display panel substrate via a conductive layer. It is good.

  According to the above configuration, the end of the wiring member on the display panel substrate side is disposed on the upper surface of the display panel substrate and is connected to the display panel substrate through the conductive layer. The connection between the unit and the display panel substrate by the wiring member can omit connectors and reduce the number of connection points in the electrical transmission path of the display panel data. As a result, even when display panel data having a large amount of data is transmitted at high speed, deterioration in waveform quality of data and increase in noise can be sufficiently suppressed.

  According to the configuration of the present invention, the wiring member for connecting the light receiving unit to the display panel substrate has the light receiving unit disposed, for example, at a position below the lower surface of the display panel substrate. Compared with the case where it connects with the member for wiring, it can arrange | position in the state with few bending. In addition, the optical receiving unit is disposed in the vicinity of the connection part between the display panel substrate and the wiring member, and the length of the wiring member between the optical receiving unit and the display panel substrate, that is, the path length of the electrical transmission is set. Can be shortened. In addition, even if the optical transmission unit is disposed below the lower surface of the display panel substrate and the optical transmission medium between the optical transmission unit and the optical reception unit is bent, the optical wiring Data transmitted by the module is less likely to cause waveform degradation.

  Therefore, bending of the wiring member between the optical receiver and the display panel substrate and deterioration of the waveform of the transmission data due to the electrical transmission path length are suppressed, and display panel data with a large amount of data is transmitted at high speed. Even in this case, the display panel data can be transmitted in a high quality state while suppressing the deterioration of the waveform quality. Moreover, a single-layer flexible printed wiring board, for example, a flexible printed wiring board having a microstrip structure can be used as the wiring member.

FIG. 1A is a plan view showing a mobile phone as an electronic apparatus according to an embodiment of the present invention. FIG. 1B is a side view showing the structure of the display device module arranged inside the mobile phone shown in FIG. It is explanatory drawing which shows the structure of the optical wiring module shown in FIG.1 (b). FIG. 3 is a block diagram of an optical wiring module showing in detail the configuration of the optical transmitter and optical receiver shown in FIG. 2. It is a side view which shows the example which provided the reinforcement board in the display apparatus module shown in FIG.1 (b). FIG. 9 is a side view illustrating another example of the display device module illustrated in FIG. 4, in which the optical transmission unit and the optical transmission unit side connector are arranged side by side on the upper surface of the FPC. . It is a top view which shows the structure of the display apparatus module in other embodiment of this invention. FIG. 7A is an explanatory diagram showing an example of an arrangement state of an FPC and an optical transmission medium in a display device module according to still another embodiment of the present invention, and FIG. 7B is an explanatory diagram of FIG. FIG. 7C is an explanatory view showing an example of a display device module in which the arrangement state of the FPC is different from the state shown in FIG. 7, and FIG. 7C is a display device in which the arrangement state of the optical wiring module is different from the state shown in FIG. FIG. 7D is an explanatory diagram illustrating an example of a module, FIG. 7D is an explanatory diagram illustrating an example of a display device module in which the arrangement state of the optical wiring module is different from the state illustrated in FIG. 7C, and FIG. FIG. 7 is an explanatory view showing an example of a display device module in which the arrangement state of the optical wiring module is different from the state shown in FIG. 7A, and FIG. 7F is an optical transmission unit and an optical reception unit of the optical wiring module for the FPC. It is explanatory drawing of the display device module explaining the connection example of That. FIG. 8A is a plan view showing a display device module in which the optical transmission medium extends in parallel with the data input side edge of the display panel substrate in still another embodiment of the present invention. FIG. 8B is a front view of the display device module shown in FIG. FIG. 9A is a plan view showing a display device module according to still another embodiment of the present invention, FIG. 9B is a front view of the display device module shown in FIG. 9A, and FIG. c) is a side view of the display device module shown in FIG. It is a top view which shows the display apparatus module in other embodiment of this invention. It is a top view which shows the display apparatus module in other embodiment of this invention. It is a side view which shows the structure of the display apparatus module in other embodiment of this invention. It is a side view which shows the structure of the display apparatus module from which the attachment position of the optical receiving part with respect to the forward direction extension part of FPC differs from the display apparatus module shown in FIG. It is explanatory drawing which shows the structure of the optical wiring module with which the display apparatus module in other embodiment of this invention is provided. It is a block diagram of the optical wiring module which showed the structure of the optical transmission part and optical reception part which were shown in FIG. 14 in detail. It is explanatory drawing which shows the structure of the optical wiring module with which the display apparatus module in other embodiment of this invention is provided. FIG. 17 is a block diagram of an optical wiring module showing in detail the configuration of the optical transmitter and optical receiver shown in FIG. 16. It is explanatory drawing which shows the structure of the optical wiring module with which the display apparatus module in other embodiment of this invention is provided. It is a block diagram of the optical wiring module which showed the structure of the optical transmission part and optical reception part which were shown in FIG. 18 in detail. It is explanatory drawing which shows the structure of the optical wiring module with which the display apparatus module in other embodiment of this invention is provided. It is a block diagram of the optical wiring module which showed the structure of the optical transmission part and optical reception part which were shown in FIG. 20 in detail.

[Embodiment 1]
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1A and 1B, the display device module 2 of the present embodiment is provided in a mobile phone 1 as an electronic device. Fig.1 (a) is a top view which shows the mobile telephone 1 as an electronic device in embodiment of this invention. FIG. 1B is a side view showing the structure of the display device module 2 arranged inside the mobile phone 1.

  As shown in FIG. 1A and FIG. 1B, the mobile phone 1 has a mobile phone casing 11 and includes a display device module 2 inside the mobile phone casing 11.

  The display device module 2 includes a display panel 21. The display panel 21 is, for example, a liquid crystal panel or an organic EL panel, and the type is not particularly limited.

  The display panel 21 is provided on the upper surface of a display panel substrate 22 made of, for example, a glass plate. The display panel 21 and the display panel substrate 22 are formed in a rectangular shape in accordance with the shape of the mobile phone 1. The length in the longitudinal direction of the display panel 21 is shorter than the length in the longitudinal direction of the display panel substrate 22, and the display panel 21 is provided with one end in the longitudinal direction of the display panel substrate 22 as a reference. Therefore, an empty area where the display panel 21 does not exist is present on the upper surface on the other end side in the longitudinal direction of the display panel substrate 22. A display driver 23 for driving the display panel 21 is disposed in this empty area.

  Below the display panel substrate 22, for example, an in-device substrate 24 is provided in parallel with the display panel substrate 22. Various elements 25 such as ICs and passive elements are provided on the in-device substrate 24.

  An in-apparatus board-side connector 26 is provided on the upper surface of the in-apparatus board 24. On the in-apparatus board-side connector 26, an optical transmitter-side connector 27 and an optical transmitter 28 are sequentially provided above. . That is, the in-device board-side connector 26 is connected to the in-device board 24, the optical transmission unit side connector 27 is connected to the in-device board side connector 26, and the optical transmission unit 28 is connected to the optical transmission unit side connector 27. . The in-device board-side connector 26 and the optical transmitter-side connector 27 perform, for example, BtoB (Board to Board) connection or ZIF (Zero Insertion Force socket) connection.

  On the other hand, a light receiving unit 29 is disposed in the vicinity of the other end portion in the longitudinal direction of the display panel substrate 22, that is, on the side of the other end portion. The other end portion of the display panel substrate 22 is a connection portion of an FPC (wiring member) 30 and is a data input side edge portion 22a.

  The light receiving unit 29 is provided on the lower surface of an FPC (Flexible Printed Circuits) 30 that connects the light receiving unit 29 and the display panel substrate 22. The optical receiver 29 is connected to the FPC 30 at this mounting position. An end of the FPC 30 on the display panel substrate 22 side is disposed on the data input side edge 22a of the display panel substrate 22, and an input side electrode (not shown) formed on the data input side edge 22a. And directly connected without a connector. Therefore, the optical receiver 29 is connected to the display panel substrate 22 via the FPC 30.

  Specifically, in the present embodiment, the FPC 30 is connected to the data input side edge 22a of the display panel substrate 22, that is, from the position of the input side electrode, in parallel with the upper surface of the display panel substrate 22, It extends outward (side) of the substrate 22. This portion is a forward extending portion (extending portion) 36 of the FPC 30, and the light receiving portion 29 is attached to the lower surface of the forward extending portion 36. The FPC 30 and the display panel substrate 22 are connected to the input side electrode at the data input side edge 22a of the display panel substrate 22 by an ACF (Anisotropic Conductive Film) as a conductive layer. ing.

  The optical transmitter 28 and the optical receiver 29 are connected by an optical transmission medium 31. These optical transmitter 28, optical receiver 29 and optical transmission medium 31 constitute an optical wiring module 32. In the optical wiring module 32, one end of the optical transmission medium 31 is connected to the optical transmission unit 28 on the surface of the optical transmission unit 28 that faces the optical reception unit 29. On the other hand, the other end of the optical transmission medium 31 is connected to the optical receiver 29 on the surface of the optical receiver 29 that faces the optical transmitter 28. Accordingly, the optical transmission medium 31 is connected to both the optical transmitter 28 and the optical receiver 29 without being extremely bent.

  In the display device module 2, data transmission from the in-device substrate 24 to the display panel substrate 22 is performed in parallel by both optical transmission and electrical transmission. For this purpose, the FPC 30 extends from the data input side edge 22a of the display panel substrate 22 in the first direction opposite to the display panel 21 side, and the upper surface of the light receiving unit 29, the light receiving unit 29 The position of the optical transmission unit side connector 27 that extends in the second direction opposite to the first direction through the lateral position and the lower position of the optical receiving unit 29 and that is below the display panel substrate 22 Has reached. The end of the FPC 30 on the optical transmission unit side connector 27 side is disposed between the optical transmission unit side connector 27 and the optical transmission unit 28 and is connected to the optical transmission unit side connector 27.

  Next, the optical wiring module 32 will be described in more detail. FIG. 2 is an explanatory diagram showing the configuration of the optical wiring module 32 shown in FIG. FIG. 3 is a block diagram of the optical wiring module 32 showing in detail the configuration of the optical transmitter 28 and the optical receiver 29 shown in FIG.

  As shown in FIG. 2, in the optical wiring module 32, the optical transmission unit 28 converts the electrical signal (display panel data) output from the CPU 33 of the in-device substrate 24 into an optical signal and outputs it. This optical signal is input to the optical receiver 29 via the optical transmission medium 31, converted into an electrical signal by the optical receiver 29, and then output to the display panel substrate 22 via the FPC 30. In FIG. 2, the in-device board 24 may be expressed as a CPU side board.

  As illustrated in FIG. 3, the optical transmission unit 28 includes an I / F circuit 41, a driver 42, and a light emitting element 43. The I / F circuit 41 and the driver 42 are configured by a transmission IC. The I / F circuit 41 converts a display standard signal into a signal for the driver 42.

  The driver 42 drives the light emitting element 43 based on the electrical signal input from the I / F circuit 41. The driver 42 may be constituted by, for example, an IC (Integrated Circuit) for driving light emission. The light emitting element 43 is driven by the driver 42 and outputs an optical signal. The light emitting element 43 is comprised by light emitting elements, such as VCSEL (Vertical Cavity-Surface Emitting Laser), for example. The light emitted from the light emitting element 43 is applied to the light incident side end of the optical transmission medium 31 as an optical signal.

  The light receiving unit 29 includes a light receiving element 44, an amplifier 45, and an I / F circuit 46. The amplifier 45 and the I / F circuit 46 are constituted by a receiving IC. The light receiving element 44 receives light as an optical signal emitted from the light emitting side end of the optical transmission medium 31 and outputs an electrical signal by photoelectric conversion. The light receiving element 44 is constituted by a light receiving element such as a PD (Photo-Diode). The amplifier 45 amplifies the electrical signal output from the light receiving element 44 and outputs it to the outside. The amplifier 45 may be configured by an amplification IC, for example. The I / F circuit 46 converts the electrical signal output from the amplifier 45 into a display standard signal.

  Here, the display device module 2 shown in FIG. 1B may have the configuration shown in FIG. FIG. 4 is a side view showing an example in which the reinforcing plate 34 is provided in the display device module 2 shown in FIG.

  As shown in FIG. 4, a reinforcing plate (for example, a member harder than the wiring member) 34 that reinforces the connection between the FPC 30 and the optical receiver 29 may be provided on the FPC 30 on the optical receiver 29. Good. Specifically, the arrangement region of the reinforcing plate (reinforcing member, metal member) 34 is a region corresponding to the attachment region of the light receiving unit 29 on the surface of the FPC 30 opposite to the surface on which the light receiving unit 29 is attached. .

  The reinforcing plate 34 is bonded to the upper surface of the FPC 30 with, for example, an adhesive. As a bonding method, for example, a heat-curing adhesive, a pressure-curing adhesive, or a tape having an adhesive on both sides can be used.

  Thus, the provision of the reinforcing plate 34 on the optical receiving unit 29 reaches the optical transmitting unit side connector 27 via the side and the lower side of the optical receiving unit 29 so that the FPC 30 is bent. In the configuration, it is effective to prevent the FPC 30 from being peeled off from the optical receiver 29 due to stress. In addition, the reinforcing plate 34 is provided for mounting the optical receiving unit 29 on the soft FPC material when the elements in the optical receiving unit 29 are wire-bonded or flip-chip mounted. It is also effective in preventing the mounting from peeling off.

  The reinforcing plate 34 is made of, for example, resin or metal. The end of the reinforcing plate 34 on the display panel substrate 22 side may reach the position of the upper surface of the FPC 30 on the display panel substrate 22. The metal may be grounded. Alternatively, the end opposite to the display panel substrate 22 side may extend from the upper surface of the light receiving portion 29 so as to protrude in the direction opposite to the display panel substrate 22 side. Forming the reinforcing plate 34 as described above reinforces the FPC 30, improves the mountability of the optical receiver 29 on the FPC, and shields noise radiated from the FPC 30 and the optical receiver 29. Is effective.

  Further, if the housing of the light receiving unit 29 is formed of a metal member, noise can be shielded with a compact configuration. In this case, if the metal member casing is grounded, it is effective to further block noise.

  In the optical wiring module 2 and other optical wiring modules shown in FIG. 4, the optical transmitter 28 and the optical transmitter-side connector 27 may be arranged as shown in FIG. FIG. 5 shows another example of the display device module 2 shown in FIG. 4, in which a light transmitting unit 28 and a light transmitting unit side connector 27 are arranged side by side on the upper surface of the FPC 30. 3 is a side view showing a module 2. FIG.

  In the display device module 2 shown in FIG. 5, the optical transmission unit 28 and the optical transmission unit side connector 27 are arranged side by side on the upper surface of the FPC 30, and both are connected by the FPC 30. In this example, since the optical transmission unit side connector 27 is disposed on the upper surface of the FPC 30, the in-device substrate 24 is disposed above the optical transmission unit side connector 27, and the optical transmission unit side connector 27 is disposed in the device internal substrate 24. It connects with the board | substrate side connector 26 in a device provided in the back surface.

  In the display device module 2 of the present embodiment, the light receiving unit 29 is in the vicinity of the data input side edge 22a of the display panel substrate 22 (in the vicinity of the input side electrode), that is, on the side of the data input side edge 22a. It is arranged in the direction. Further, the upper surface of the light receiving unit 29 is arranged to be equal to or lower than the upper surface of the display panel substrate 22 on which the display panel 21 is provided. Therefore, an increase in the thickness of the display panel 21 ahead of the display surface is not caused.

  Further, since the light receiving unit 29 is attached to the FPC 30 that connects the light receiving unit 29 and the display panel substrate 22, the display panel 21 is not increased in size.

  In addition, the light receiving unit 29 is arranged in a region on the lower surface of the FPC 30 or a region on the lower surface of the FPC 30 and the display device module 2. Thereby, the space can be effectively used.

  Further, among the data for the display panel 21 transmitted from the in-device substrate 24 to the display panel substrate 22, the data transmitted by the optical wiring module 32 is the data input side of the display panel substrate 22 from the in-device substrate 24. Optical transmission is performed over a long distance up to the vicinity of the edge portion 22a. Thereafter, electrical transmission is performed over a short distance between the light receiving unit 29 disposed in the vicinity of the data input side edge 22a and the display panel substrate 22. Further, in the electrical transmission path from the light receiving unit 29 to the display panel substrate 22, there are no connectors and the number of connection points is very small. Therefore, for the data transmitted by the optical wiring module 32, it is possible to sufficiently suppress the deterioration of the waveform quality of the data and the increase of noise.

  In the display device module 2, among the display panel data signals (data) transmitted from the in-device substrate 24 to the display panel substrate 22, the first signal is transmitted by the optical transmission medium 31. These signals are transmitted by the FPC 30. That is, the first signal is transmitted from the in-device board 24 to the in-device board side connector 26, the optical transmission unit side connector 27, the optical transmission unit 28, the optical transmission medium 31, the optical reception unit 29, the optical reception unit 29, and the display panel. Is supplied to the display panel substrate 22 through the FPC 30 between the display substrate 22 and the display substrate 22. The second signal is supplied from the in-device substrate 24 to the display panel substrate 22 through the in-device substrate side connector 26, the optical transmission unit side connector 27, and the FPC 30.

  Here, the first signal is image data, and the second signal is a signal other than the image data, for example, power supplied from a power source or a signal that flows to GND (ground). Alternatively, the first signal is a high-speed signal among signals supplied to the display panel substrate 22, and the second signal is a low-speed signal among signals supplied to the display panel substrate 22. The high-speed signal is a signal having a high frequency or a high transmission rate, and the low-speed signal is a signal having a low frequency or a low transmission rate compared to the high-speed signal. The high-speed signal is image data displayed on the display panel 21, and the low-speed signal is a control signal for displaying image data on the display panel 21, and includes, for example, a control signal for a power supply IC of a touch panel or a backlight. It is.

  Further, as described above, the first signal is optically transmitted by the optical wiring module 32 over a long distance from the in-device substrate 24 to the vicinity of the data input side edge 22a of the display panel substrate 22, and the optical receiver A short distance from 29 to the display panel substrate 22 is electrically transmitted by the FPC 30. Moreover, the FPC 30 between the light receiving unit 29 and the display panel substrate 22 extends linearly from the light receiving unit 29 to the display panel substrate 22 without being bent. Therefore, the first signal, for example, high-speed signal and image data whose signal waveform is easily deteriorated by transmission is supplied from the in-device substrate 24 to the display panel substrate 22 in a state in which the deterioration of the signal waveform is reliably suppressed. The

  On the other hand, the second signal is electrically transmitted by the FPC 30 from the in-device substrate 24 to the display panel substrate 22 as described above. This second signal is, for example, a low-speed signal and is a control signal for displaying image data on the display panel 21 and is a signal whose signal waveform is unlikely to deteriorate due to transmission. Therefore, even when the electric transmission is performed by the FPC 30, the influence due to the deterioration of the signal waveform is small.

  As a result, the display panel 21 can perform display with good image quality even when high-definition display is performed by high-speed and large-volume data transmission to the display panel substrate 22.

  The FPC 30 between the optical receiver 29 and the display panel substrate 22 is not bent, and the optical receiver 29 is configured so that the FPC 30 in the above part is a straight line in order to suppress deterioration of the signal waveform in the FPC 30 in this part. Most preferably, it is disposed at a position (forward extending portion 36).

  In addition, since most of the FPC 30 transmits only low-speed signals, the degree of freedom of the material and the radius of curvature of the FPC 30 in that portion increases.

  However, the configuration in which the optical receiving unit 29 is arranged is not limited to the above configuration. That is, the optical receiver 29 and the FPC 30 are regions outside the region above the upper surface of the display panel substrate 22 and outside the region below the lower surface, and are connected to the connection side end surface of the FPC 30 in the display panel substrate 22. What is necessary is just to mutually connect in the area | region on the opposite side to the board | substrate 22 for display panels. In this case, the light receiving unit 29 is an area outside the area above the upper surface of the display panel substrate 22 and outside the area below the lower surface, and on the data input side edge 22a side of the display panel substrate 22. You may provide in the area | region on the opposite side to the substrate 22 side for display panels with respect to an end surface (connection side end surface of the member for wiring). Alternatively, the light receiving unit 29 may be in a state where a part of the light receiving unit 29 reaches the region on the lower surface of the display panel substrate 22 in the state where the light receiving unit 29 is provided in the region.

  Even when the light receiving unit 29 is arranged as described above, bending of the FPC 30 between the light receiving unit 29 and the display panel substrate 22 can be suppressed, and the light receiving unit 29 and the display panel substrate 22 can be prevented from being bent. In the FPC 30 in between, data transmission with less waveform deterioration is possible.

  Further, as shown in FIG. 1B, the optical transmission unit 28 and the optical transmission unit side connector 27 are arranged in a region below the lower surface of the display panel substrate 22, for example, from the viewpoint of effective use of space. be able to.

  In the display device module 2, display panel data transmitted from the in-device substrate 24 to the display panel substrate 22 is transmitted in parallel by the optical transmission medium 31 and the FPC 30. However, the transmission of display panel data from the position of the optical transmitter 28 (optical transmitter-side connector 27) to the position of the optical receiver 29 may be performed only by the optical transmission medium 31. This also applies to other display device modules.

[Embodiment 2]
Another embodiment of the present invention will be described below with reference to the drawings.
The display device module 101 of the present embodiment has a configuration shown in FIG. FIG. 6 is a plan view showing the structure of the display device module 101.

  In the display device module 101, the light receiving unit 29 is attached to the forward extending portion 36 of the FPC 30 in the vicinity of the data input side edge 22 a of the display panel substrate 22, similarly to the optical wiring module 32. Yes. FIG. 6 shows a state before the FPC 30 is bent from the folding position 48.

  In the display device module 101, the FPC 30 extends in the horizontal direction of the position of the light receiving unit 29 along the data input side edge 22 a of the data input side edge 22 a of the display panel substrate 22. For example, a filter circuit 49 is arranged. In this way, not only the components of the optical wiring module 32 but also other components and the like may be appropriately disposed on the FPC 30.

  When the display device module 101 is incorporated into the mobile phone 1, the optical transmission unit 28 is disposed below the display panel substrate 22. Therefore, in the display device module 101 shown in FIG. 6, the FPC 30 is bent from the bending position 48 to the lower surface side of the display panel substrate 22. As a result, the FPC 30, the optical transmission unit 28, and the filter circuit 49 on the optical transmission unit 28 side from the position near the optical reception unit 29 are disposed below the display panel substrate 22.

  The display device module 101 performs optical transmission using the optical transmission medium 31 from the optical transmission unit 28 to the optical reception unit 29 in data transmission from the in-device substrate 24 to the display panel substrate 22, and the position of the optical transmission unit 28. Electrical transmission by the FPC 30 is performed in parallel with the optical transmission from the optical transmission unit side connector 27 to the position of the optical reception unit 29. Further, electrical transmission by the FPC 30 is performed from the position of the light receiving unit 29 to the display panel substrate 22 (data input side edge portion 22a). The optical transmission medium 31 may be fixed to the FPC 30.

  7A to 7F show examples of various arrangement forms of the FPC 30 and the optical wiring module 32. FIG. 7A to 7F show a state before the FPC 30 is bent at the bending position 48. FIG.

  In the display device module shown in FIG. 7A, the FPC 30 and the optical transmission medium 31 are linearly arranged in the direction opposite to the display panel 21 from the data input side edge 22 a of the display panel substrate 22. Yes.

  In the display device module shown in FIG. 7B, the FPC 30 and the optical transmission medium 31 are linearly arranged in the direction opposite to the display panel 21 from the data input side edge 22 a of the display panel substrate 22. Yes. When the FPC 30 portion is the longitudinally extending portion 30a, the FPC 30 is a first horizontal portion extending along the data input side edge portion 22a at the end of the longitudinally extending portion 30a on the display panel substrate 22 side. And a second laterally extending portion 30c extending in the same direction in parallel with the first laterally extending portion 30b at the opposite end of the longitudinally extending portion 30a. ing.

  The display device module shown in FIG. 7C is arranged so that the FPC 30 has the same shape as the display device module shown in FIG. In the optical wiring module 32, the optical receiving unit 29 is disposed at the end of the vertical extending portion 30a of the FPC 30 on the display panel substrate 22 side, and the optical transmitting unit 28 is in the vertical direction of the second lateral extending portion 30c. It is arrange | positioned at the edge part on the opposite side to an extending part. The optical transmission medium 31 is disposed so as to be substantially linear between the optical transmission unit 28 and the optical reception unit 29 without being along the FPC 30.

  The display module shown in FIG. 7D is arranged so that the FPC 30 has the same shape as the display module shown in FIG. 7C, and the optical receiver 29 and the optical transmitter 28 of the optical wiring module 32. Are arranged at the same position as the display device module shown in FIG. On the other hand, the optical transmission medium 31 is arranged so as to be bent in an L shape along the FPC 30.

  In the display device module shown in FIG. 7E, the FPC 30 is arranged in the same shape as the vertically extending portion 30a as the display device module shown in FIG. The optical receiving unit 29 of the optical wiring module 32 is disposed at the end of the FPC 30 on the display panel substrate 22 side, and the optical transmitting unit 28 is lateral to the end of the FPC 30 opposite to the display panel substrate 22 side. Is arranged. Therefore, the optical transmission medium 31 is arranged so as to be substantially linear between the optical transmission unit 28 and the optical reception unit 29 without being along the FPC 30.

  In the configuration shown in FIG. 7E, reference numeral 51 supplies the display panel substrate 22 with power, GND, and the like other than the image data and the control signal for displaying the image data on the display panel 21. It is a connector used for. Therefore, the FPC 30 can receive power and GND signals. The optical transmission unit side connector 27 is provided at the position of the optical transmission unit 28. As described above, the optical transmitter 28 can be arranged at a position different from the FPC 30.

  When the optical wiring module 32 is provided in the FPC 30, the optical transmitting unit 28 and the optical receiving unit 29 of the optical wiring module 32 are BtoB connected, ACF connected, or ZIF connected to the FPC 30 as shown in FIG. be able to. In the example of FIGS. 7A to 7F, the optical receiver 29 is disposed on the upper surface of the forward extending portion 36.

  Further, the optical wiring module 32, that is, the optical transmission medium 31, may be arranged as shown in FIGS. 8 (a) and 8 (b). 8A is a plan view of the display device module 111 in which the optical transmission medium 31 is arranged so as to extend in parallel with the data input side edge portion 22a of the display panel substrate 22, and FIG. It is a front view of the display apparatus module 111 shown to Fig.8 (a).

  As shown in FIGS. 8A to 8B, in the display device module 111, the light receiving unit 29 is attached to the lower surface of the forward extending portion 36 formed in a wide width of the FPC 30. The FPC 30 extends from one end portion of the forward extension portion 36 in a direction parallel to the data input side edge portion 22 a of the display panel substrate 22 to wrap around the forward extension portion 36. The optical transmitter 28 is attached to the upper surface at the end of the portion of the FPC 30 extending in this manner.

  Note that the end of the FPC 30 on the side where the optical transmitter 28 is attached is disposed so as to substantially coincide with the end of the display panel substrate 22 in the width direction. Further, when the optical transmission medium 31 that connects the optical transmission unit 28 and the optical reception unit 29 is fixed to the FPC 30, the optical transmission medium 31 is arranged along the FPC 30 arranged as described above.

  Further, an optical transmission unit side connector 27 connected to the FPC 30 is provided on the lower surface of the FPC 30 at the position where the optical transmission unit 28 is disposed. An in-apparatus board 24 is provided below the optical transmitter-side connector 27, and an in-apparatus board-side connector 26 provided on the in-apparatus board 24 is connected to the optical transmitter-side connector 27. It may be a configuration.

  Further, the optical wiring module 32, that is, the optical transmission medium 31, may be arranged as shown in FIGS. 9 (a) to 9 (c). 9A is a plan view of the display device module 121 in which the optical transmission medium 31 extends in parallel with the data input side edge 22a of the display panel substrate 22. FIG. 9B is a plan view of FIG. FIG. 9C is a side view of the display device module 121 shown in FIG. 9A.

  9A to 9C, in the display device module 121, the forward extending portion 36 of the FPC 30 is, for example, an end portion in the width direction of the display panel substrate 22 in the display driver 23. Is arranged at a position near one end in the width direction of the display panel substrate 22. The optical transmitter 28 is attached to the lower surface of the forward extending portion 36 of the FPC 30. The optical transmission medium 31 extends in parallel with the data input side edge 22a from the light receiver 29 toward the other end in the width direction of the display panel substrate 22, and is disposed at the other end. Has reached.

  Further, an optical transmission unit side connector 27 connected to the FPC 30 is provided on the lower surface of the FPC 30 at the position where the optical transmission unit 28 is disposed. An in-apparatus board 24 is provided below the optical transmitter-side connector 27, and an in-apparatus board-side connector 26 provided on the in-apparatus board 24 is connected to the optical transmitter-side connector 27. It may be a configuration.

  Further, the optical wiring module 32, that is, the optical transmission medium 31, may be arranged as shown in FIG. FIG. 10 shows the lower side of the display panel substrate 22 so that the optical transmission medium 31 extends in parallel with the data input side edge 22a of the display panel substrate 22 and then is perpendicular to the data input side edge 22a. FIG.

  As shown in FIG. 10, in the display device module 131, the forward extending portion 36 of the FPC 30 is disposed at a position corresponding to one end portion in the width direction of the display panel substrate 22 in the display driver 23, for example. . The FPC 30 extends in parallel with the data input side edge 22 a from the forward extending portion 36, and then bends in the vertical direction toward the display panel substrate 22 and extends below the display panel substrate 22. On the FPC 30, an optical transmitter 28 is attached on the lower end of the display panel substrate 22. An optical transmission unit side connector 27 is provided under the FPC 30 at a position where the optical transmission unit 28 is attached, and the FPC 30 is connected to the optical transmission unit side connector 27 at that position.

  The optical transmitter 28 is attached to the lower surface of the forward extending portion 36 of the FPC 30. The optical transmission medium 31 extends from the optical receiver 29 so as to follow the arrangement shape of the FPC 30 and reaches the optical transmitter 28 below the display panel substrate 22.

  Further, the optical wiring module 32, that is, the optical transmission medium 31, may be arranged as shown in FIG. In FIG. 11, the optical transmission medium 31 extends in parallel with the data input side edge 22a of the display panel substrate 22, and then the lower surface side of the display panel substrate 22 is perpendicular to the data input side edge 22a. FIG. 6 is a plan view of a display device module 141 extending in a vertical direction.

  As shown in FIG. 11, in the display device module 141, the forward extending portion 36 of the FPC 30 is disposed at a position corresponding to one end portion in the width direction of the display panel substrate 22 in the display driver 23, for example. . The optical transmitter 28 is attached to the lower surface of the forward extending portion 36 of the FPC 30. The optical transmission medium 31 extends in parallel with the data input side edge 22a from the light receiving unit 29, and then bends vertically toward the display panel substrate 22 and extends below the display panel substrate 22. . The lower end of the display panel substrate 22 in the optical transmission medium 31 is connected to the optical transmitter 28.

  The FPC 30 may extend from the forward extending portion 36 to the position of the optical transmission unit 28 together with the optical transmission medium 31. In this case, the FPC 30 extends along the arrangement shape of the optical transmission medium 31 and reaches the optical transmitter connector 27 arranged below the display panel substrate 22.

  In each of the display device modules described above, the light receiving unit 29 is attached to the forward extending portion 36 and is disposed in the vicinity of the data input side edge portion 22a of the display panel substrate 22. Further, as described above, the first signal is optically transmitted by the optical transmission medium 31 from the optical transmission unit 28 to the optical reception unit 29, and the forward extending portion 36 of the FPC 30 from the optical reception unit 29 to the display panel substrate 22. Is electrically transmitted. The second signal is electrically transmitted by the FPC 30 from the optical transmitter connector 27 to the display panel substrate 22. Accordingly, each of the display device modules has the same function as the display device module 2 described above.

[Embodiment 3]
Still another embodiment of the present invention will be described below with reference to the drawings.
FIG. 12 is a side view showing the structure of the display device module 101 in the embodiment. As shown in FIG. 12, in the display device module 151, the FPC 30 has a forward extending portion 36, and the light receiving portion 29 is attached to the lower surface of the forward extending portion 36.

  An intermediate substrate (first substrate) 39 is disposed below the display panel substrate 22. In the intermediate substrate 39, the end on the data input side edge 22 a side of the display panel substrate 22 extends beyond the position of the light receiving unit 29. On the other hand, the optical transmission unit 28 and the optical transmission unit side connector 27 are disposed below the intermediate substrate 39.

  Therefore, the optical transmission medium 31 that connects the optical receiver 29 and the optical transmitter 28 is positioned laterally at the end of the intermediate substrate 39 from the side of the optical receiver 29 opposite to the display panel substrate 22 side. , And reaches the position of the optical transmitter 28 by going under the intermediate substrate 39. In this case, the optical transmission unit 28 is disposed in a region below the lower surface of the display panel substrate 22 and in the region of the display panel substrate 22 with respect to the connection side end surface of the FPC 30 in the display panel substrate 22. .

  Similarly, the FPC 30 extending from the forward extending portion 36 to the side opposite to the display panel substrate 22 side passes through the lateral position of the light receiving portion 29 and the lateral position of the end portion of the intermediate substrate 39, It goes under the substrate 39 and reaches a position between the optical transmitter 28 and the optical transmitter connector 27 and is connected to the optical transmitter connector 27. In this case, the FPC 30 is disposed outside the optical transmission medium 31 along the optical transmission medium 31.

  According to the above configuration, in the display device module 151, the display panel data is optically transmitted by the optical wiring module 32 that hardly causes signal degradation even when the optical transmission medium 31 is arranged in a bent state. can do. In addition, electrical transmission is performed between the light receiving unit 29 and the display panel substrate 22 by the forward extending portion 36 of the FPC 30 without bending, and signal degradation hardly occurs here.

  Therefore, the optical transmission medium 31 that arranges the intermediate substrate 39 below the display panel substrate 22, arranges the optical transmission unit 28 below or below the intermediate substrate 39, and connects the optical transmission unit 28 and the optical reception unit 29 is provided. The intermediate substrate 39 can be arranged in a bent state so as to bypass the intermediate substrate 39. Therefore, in an electronic device such as the mobile phone 1 provided with the display device module 151, necessary members can be appropriately disposed between the optical transmission unit 28 and the optical reception unit 29, so that the degree of freedom in design is improved. can do.

  Further, the intermediate substrate 39 can be extended to a position below the light receiving unit 29. Thereby, the mounting area of the intermediate substrate 39 can be increased. Further, as described in Patent Document 1, the display driver 23, the receiving IC of the light receiving unit 29, and the light receiving element of the light receiving unit 29 are arranged in this order from the display panel 21 side. The distance from the IC can be further shortened, and waveform deterioration can be further suppressed.

  In the display device module 151 shown in FIG. 12, the mounting position of the light receiving unit 29 with respect to the forward extending portion 36 of the FPC 30 may be the upper surface of the forward extending portion 36.

  13 differs from the display device module shown in FIG. 12 in that the mounting position of the light receiving unit 29 with respect to the forward extending portion 36 of the FPC 30 is different, and the light receiving unit 29 is mounted on the upper surface of the forward extending portion 36. It is a side view which shows the structure of the display apparatus module 161 which is.

  Also in the display device module 161, the optical transmission medium 31 passes from the side surface opposite to the display panel substrate 22 side in the light receiving unit 29 via the lateral position of the end portion of the intermediate substrate 39, and It goes down and reaches the position of the optical transmitter 28. The optical transmitter 28 is disposed in the region of the display panel substrate 22 with respect to the connection side end surface of the FPC 30 in the display panel substrate 22 below the lower surface of the display panel substrate 22. On the other hand, the FPC 30 is disposed outside the optical transmission medium 31 along the optical transmission medium 31.

[Embodiment 4]
Still another embodiment of the present invention will be described below with reference to the drawings.
FIG. 14 is an explanatory diagram showing a configuration of an optical wiring module 32 provided in a display device module according to still another embodiment of the present invention. FIG. 15 is a block diagram of the optical wiring module 32 showing in detail the configuration of the optical transmitter 28 and the optical receiver 29 shown in FIG.

  As shown in FIG. 14, the optical wiring module 32 of the present embodiment has a configuration in which an optical transmission medium 31 that optically transmits data and an FPC 30 that electrically transmits data are provided in parallel. That is, FIG. 14 and FIG. 15 show the display panel data from the in-device substrate 24 to the display panel substrate 22 in parallel with the optical transmission and the electrical transmission described based on FIG. 1 (a) and FIG. 1 (b). The structure to perform is shown in detail.

  In the optical wiring module 32, among the signals transmitted from the in-device substrate 24 to the display panel substrate 22, the first signal is transmitted by the optical transmission medium 31, and the second signal is transmitted by the FPC 30. It has become. The first signal and the second signal are as described above.

  In the optical wiring module 32 shown in FIG. 14, as shown in FIG. 15, the optical transmission unit 28 includes an I / F circuit 41, a driver 42, and a light emitting element 43, and the optical reception unit 29 includes an amplifier 45 and a CDR circuit. 47 (Clock Data Recovery) and an I / F circuit 46 are provided.

  In the above configuration, the high-speed signal (first signal) among the image signals input to the optical transmission unit 28 is transmitted through the I / F circuit 41, the driver 42, and the light emitting element 43 of the optical transmission unit 28. A signal is input to the optical receiver 29 via the optical transmission medium 31. The optical signal of the high-speed signal input to the optical receiver 29 is output as an electrical signal from the optical receiver 29 via the light receiving element 44, the amplifier 45, the CDR circuit 47 and the I / F circuit 46, and passes through the FPC 30. To the display panel substrate 22.

  On the other hand, the low-speed signal (second signal) among the image signals input to the optical transmission unit 28 passes through the I / F circuit 41 of the optical transmission unit 28 and remains as an electrical signal via the FPC 30. 29. The low-speed electrical signal input to the optical receiver 29 is output from the optical receiver 29 via the I / F circuit 46 and supplied to the display panel substrate 22 via the FPC 30.

  According to the above configuration, a high-speed signal that is likely to deteriorate due to the presence of an electrical connection point or a bent portion of the FPC 30 is optically transmitted by the optical transmission medium 31, and an electrical connection point or a bent portion of the FPC 30 exists. A low-speed signal that is hardly deteriorated even if transmitted is transmitted by the FPC 30. Accordingly, it is possible to suppress deterioration in signal waveform quality and increase in noise for the entire image signal. Accordingly, in the configuration in which data transmission is performed by the FPC 30 in parallel with the optical transmission medium 31 from the in-device board 24 to the optical receiving unit 29, the degree of freedom of the arrangement state (the routing state) of the FPC 30 can be increased.

  The optical wiring module 32 shown in FIGS. 14 and 15 may have the configuration shown in FIGS. 16 and 17. FIG. 16 is an explanatory diagram showing a configuration of an optical wiring module 32 provided in a display device module according to still another embodiment of the present invention. FIG. 17 is a block diagram of the optical wiring module 32 showing in detail the configuration of the optical transmitter 28 and the optical receiver 29 shown in FIG.

  As shown in FIG. 16, the optical wiring module 32 of the present embodiment is configured to optically transmit data using an optical transmission medium 31. In the optical wiring module 32 shown in FIG. 21, as shown in FIG. 21, the optical transmitter 28 includes an I / F circuit 41, a driver 42, and a light emitting element 43, and the optical receiver 29 includes an amplifier 45 and a CDR circuit. 47 and an I / F circuit 46 are provided. Data for transmission and a clock signal CLK are input to the optical transmitter 28 from the in-device board 24.

  In the above configuration, the transmission data and the clock signal CLK input to the optical transmission unit 28 become optical signals via the I / F circuit 41, the driver 42, and the light emitting element 43 of the optical transmission unit 28, and the optical transmission. The light is input to the optical receiver 29 via the medium 31. Data for transmission input to the optical receiver 29 is output as an electrical signal from the optical receiver 29 via the light receiving element 44, the amplifier 45, the CDR circuit 47, and the I / F circuit 46, and the clock signal CLK is The light receiving unit 29 outputs the electric signal via the light receiving element 44, the amplifier 45 and the CDR 47. The transmission data and the clock signal CLK are supplied to the display panel substrate 22 via the FPC 30.

  According to the above configuration, the optical receiver 29 has a CDR (Clock Data Recovery) function by the CDR circuit 47. Therefore, the transmission data (data for the display panel 21) output from the optical receiver 29 is good without waveform deterioration. Therefore, even if some signal deterioration occurs in the FPC 30 that supplies data from the light receiving unit 29 to the display panel substrate 22, the data supplied to the display panel substrate 22 is good with little waveform deterioration. Can be maintained. Thereby, the restriction | limiting of the wiring state about FPC30 between the optical receiver 29 and the display panel board | substrate 22 can be eased.

  The optical wiring module 32 shown in FIGS. 14 and 15 may further have the configuration shown in FIGS. 18 and 19. FIG. 18 is an explanatory diagram showing a configuration of an optical wiring module 32 provided in a display device module according to still another embodiment of the present invention. FIG. 19 is a block diagram of the optical wiring module 32 showing in detail the configuration of the optical transmitter 28 and the optical receiver 29 shown in FIG.

  As shown in FIG. 18, the optical wiring module 32 according to the present embodiment is configured to optically transmit data using an optical transmission medium 31. The data for transmission in this case is the high-speed signal and low-speed signal of the image signal shown in FIGS. That is, in the display device module, the high-speed signal and the low-speed signal of the image signal are transmitted from the in-device substrate 24 to the optical receiving unit 29 by the optical transmission medium 31 like the optical wiring module 32 of the present embodiment. The structure performed only by this may be sufficient.

  The optical wiring module 32 shown in FIG. 14 and FIG. 15 may further have the configuration shown in FIG. 20 and FIG. FIG. 20 is an explanatory diagram showing a configuration of an optical wiring module 32 provided in a display device module according to still another embodiment of the present invention. FIG. 21 is a block diagram of the optical wiring module 32 showing in detail the configuration of the optical transmitter 28 and the optical receiver 29 shown in FIG.

  As shown in FIG. 20, a touch panel 35 is provided on the display panel 21 on the display panel substrate 22. The optical wiring module 32 according to the present embodiment is configured to optically transmit data through the optical transmission medium 31, and between the optical transmission unit 28 and the optical reception unit 29, an image signal and a touch panel signal for the display panel 21. Optical transmission. The optical wiring module 32 may have such a configuration.

  In the above embodiment, the mobile phone 1 has been described as an example of an electronic device in which each display device module is incorporated. However, the electronic device may be a notebook PC or a tablet-type mobile terminal device, for example. The mobile phone 1 may also be a clamshell type, a slide type or a bar type, or a smartphone.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

1 Mobile phone (electronic equipment)
2 Display Device Module 21 Display Panel 22 Display Panel Substrate 23 Display Driver 24 In-Device Substrate (First Substrate)
26 In-apparatus board side connector 27 Optical transmission unit side connector 28 Optical transmission unit 29 Optical reception unit 30 FPC (wiring member)
31 Optical transmission medium 32 Optical wiring module 34 Reinforcement plate (reinforcement member, metal member)
36 Forward extension part (extension part)
48 Bending position
101,111,121,131,141,151,161 Display module

Claims (9)

A display panel substrate provided with a display panel on an upper surface;
An optical transmission unit that converts an electrical signal into an optical signal, an optical transmission medium, and an optical reception unit that converts an optical signal into an electrical signal, and transmits the display panel data supplied to the display panel substrate to the optical transmission In a display device module comprising an optical wiring module that transmits light from a part to the light receiving part via the optical transmission medium,
The light receiving portion is connected to the display panel substrate by a conductive wiring member, and the light receiving portion and the wiring member are formed on the upper surface and the lower surface of the display panel substrate. A region outside the lower region and connected to each other in a region opposite to the display panel substrate side with respect to the connection side end surface of the wiring member in the display panel substrate. Display module. The wiring member is connected to the display panel substrate on the upper surface side of the display panel substrate, and the light receiving unit is parallel to the upper surface of the display panel substrate from a connection portion with the display panel substrate. An extending portion extending in the region to be disposed;
The display device module according to claim 1, wherein the light receiving unit is connected to the wiring member at the extended portion.   The display device module according to claim 2, wherein the light receiving unit is disposed on a lower surface side of the extending portion and is connected to the wiring member on a lower surface of the extending portion. The wiring member is composed of a flexible printed wiring board, and is connected to a connector extending in a direction opposite to the connecting portion with respect to the display panel substrate from the connecting portion with the light receiving portion,
The connector and the optical transmitter are disposed at a position below the lower surface of the display panel substrate,
In the first transmission path by the wiring member from the optical wiring module and the light receiving unit to the display panel substrate, first data of the display panel data is transmitted, and the display displays the first data. 4. The second data of the display panel data is transmitted through the second transmission path by the wiring member to the panel substrate. 5. Display module.   The optical transmitter is an area below the lower surface of the display panel substrate, and is disposed in an area on the display panel substrate side with respect to the connection side end surface of the wiring member in the display panel substrate. 5. The optical transmission medium according to claim 1, wherein the optical transmission medium extends from a side surface of the optical receiver that is opposite to the display panel substrate side and reaches the optical transmitter. The display device module according to 1.   The reinforcement member is provided in the area | region corresponding to the attachment area | region of the said optical receiving part in the surface on the opposite side to the surface connected with the said optical receiving part of the said member for wiring. 6. The display device module according to any one of items 1 to 5.   The metal member is provided in the area | region corresponding to the attachment area | region of the said optical receiving part in the surface on the opposite side to the surface connected to the said optical receiving part of the said member for wiring. 6. The display device module according to any one of items 1 to 5.   The end of the wiring member on the display panel substrate side is disposed on an upper surface of the display panel substrate and is connected to the display panel substrate through a conductive layer. 8. The display device module according to any one of 1 to 7.   An electronic apparatus comprising the display device module according to claim 1.

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