JP2009031618A - Liquid crystal device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal device using circuit components to stably display an image without being influenced by an operation of light emitting components while the circuit components and the light emitting components are mounted on a common FPC board, and moreover which is manufactured at a low cost. <P>SOLUTION: The FPC board 6 has a first region A1 on which the circuit components 29 are mounted, a second region A2 on which LEDs 9 are mounted, and a connecting section 30 to connect the region A1 and the region A2. When developed (a), the region A2 is farther from a liquid crystal panel 3 than the region A1. The region A1 and the region A2 are separated from each other in regions other than the connecting section 30. When developed, a bending section B2 of the connecting section 30 is farther from the liquid crystal panel 3 than a bending section B1, and closer to the liquid crystal panel 3 than the region A2. The connecting section 30 is bent at the bending section B1 to the non-display side of the liquid crystal panel 3 (arrow C), and further is bent at the bending section B2 to a direction separated from the liquid crystal panel 3 (arrow D). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a liquid crystal device in which a flexible substrate is connected to a liquid crystal panel and an electronic device configured using the liquid crystal device.

  Currently, liquid crystal devices are widely used in electronic devices such as mobile phones and PDAs (Personal Digital Assistants). A liquid crystal device generally has a liquid crystal panel for displaying an image. The liquid crystal panel is formed, for example, by providing a polarizing plate on the outer surface of each of a pair of substrates bonded with a liquid crystal layer interposed therebetween. Inside the liquid crystal panel, pixels that are a plurality of island-shaped (that is, dot-shaped) regions arranged in a direction orthogonal to each other in a plan view are formed.

  When the liquid crystal panel is divided by the daylighting method, it can be divided into a reflection type, a transmission type, and a transflective type. The reflection type is a method of performing display using external light such as sunlight or room light. The transmission type is a method in which a display is performed by additionally providing an illuminating device on a liquid crystal panel and modulating the light supplied from the illuminating device to the liquid crystal panel by the liquid crystal panel. The transflective type is a method in which a reflective display area and a transmissive display area are provided in each pixel, and a reflective type and a transmissive type display are selectively performed as necessary.

  In a liquid crystal device including an illuminating device such as a transmissive and transflective liquid crystal device, a liquid crystal panel driving circuit for supplying scanning signals and data signals to a plurality of pixels is necessary. A light emission control circuit for controlling light emission of the light source is required. 2. Description of the Related Art Conventionally, a liquid crystal device in which both a circuit component constituting a circuit for driving a liquid crystal panel and an LED (Light Emitting Diode) as a light emitting component are provided on one flexible substrate and the flexible substrate is connected to the liquid crystal panel. Is known (see, for example, Patent Document 1).

  Conventionally, a liquid crystal device including a panel driving flexible circuit board and a light source driving flexible circuit board is known (see, for example, Patent Document 2). The panel driving flexible circuit board electrically connects the liquid crystal panel driving circuit and the liquid crystal panel. Further, an LED as a light source is mounted on the light source driving flexible circuit board. The light source driving flexible circuit board has a function of electrically connecting the LED to the light emission control circuit.

Japanese Patent Laid-Open No. 2001-264751 (page 3, FIGS. 1 and 2) Japanese Unexamined Patent Publication No. 2007-41263 (pages 5 to 7, FIGS. 1 and 3)

  In the liquid crystal device disclosed in Patent Document 1, so-called double-sided mounting is performed in which circuit components are mounted on one surface of one FPC board and LEDs are mounted on the opposite surface. When performing this double-sided mounting, SMT (Surface Mount Technology) processing must be performed twice on both sides of the FPC board in total, resulting in an increase in manufacturing cost.

  In this conventional apparatus, the panel driving circuit component and the LED are mounted on a substantially rectangular FPC board having a substantially flat shape. That is, the circuit component and the LED are directly connected in a wide range by the board material of the FPC board. For this reason, fluctuations in the current for LED driving may adversely affect the panel driving circuit, and image display may become unstable.

  In the liquid crystal device disclosed in Patent Document 2, a panel driving flexible circuit board and a light source driving flexible circuit board are individually prepared and connected to each other by soldering, a connector, or the like. In this conventional apparatus, the cost of parts is high for preparing two substrates, the SMT process is also required twice, the manufacturing cost is high, and the costs for soldering, connectors, etc. are further high. have.

  As described above, in a conventional liquid crystal device including an FPC board on which two types of components, a circuit component and a light-emitting component, are mounted, the manufacturing cost including the component cost is kept low, and the light-emitting component is supplied. It has been difficult to achieve both stable image display even when the current varies. The present invention has been made in order to solve this problem, and stable display of images by circuit components despite the fact that both circuit components and light-emitting components are mounted on a flexible substrate. An object of the present invention is to provide a liquid crystal device and an electronic apparatus that can perform the above-described process and can reduce the manufacturing cost.

  The liquid crystal device according to the present invention includes a liquid crystal panel for displaying an image and a flexible substrate connected to the liquid crystal panel, and the flexible substrate is bent from an unfolded state. The flexible substrate has a first area on which circuit components are mounted, a second area on which light-emitting components are mounted, and a connecting portion that connects the first area and the second area, and the second area Is located farther from the liquid crystal panel than the first region in the unfolded state, the first region and the second region are separated from each other except for the connection portion, and the connection portion is the first A bending portion and a second bending portion, wherein the second bending portion is located farther from the liquid crystal panel than the first bending portion and closer to the liquid crystal panel than the second region in the unfolded state. And the connecting portion is connected to the first bent portion. Wherein the side where the image of the liquid crystal panel appears bent to the opposite side, further wherein the connecting portion is characterized by being bent in a direction away from the liquid crystal panel in the second bent portion Te.

  According to the liquid crystal device of the present invention, the first region where the circuit component is mounted and the second region where the light emitting component is mounted are spatially separated from each other in the portion other than the connection portion. Even when a fluctuation occurs in the supplied current, the fluctuation can be prevented from adversely affecting the operation of the circuit component, and as a result, it is possible to prevent the image display performed using the circuit component from becoming unstable.

  The second region, which is the mounting region for the light emitting component, is located farther from the liquid crystal panel than the first region, which is the mounting region for the circuit component, in the expanded state of the flexible substrate, and the first region, the second region, The connecting portion connecting the first and second bent portions has a first bent portion and a second bent portion, and the second bent portion is located farther from the liquid crystal panel than the first bent portion in the expanded state of the flexible substrate and from the second region. Is also close to the liquid crystal panel, the connecting portion is bent to the side opposite to the image display side of the liquid crystal panel at the first bent portion, and the connecting portion is further away from the liquid crystal panel at the second bent portion. It is bent.

  By adopting such a twice-folded structure, the flexible substrate is formed by a single substrate, and both the circuit component and the light-emitting component are placed on one surface on the non-display surface side of the flexible substrate. It became possible to mount one side on top. And by implementing the single-sided mounting on a single board | substrate, component cost and a manufacturing man-hour can be restrained low, Therefore, overall manufacturing cost can be restrained low. In addition, since the circuit component and the light emitting component are mounted not on the display side of the flexible substrate but on the non-display surface side opposite to the flexible substrate, the circuit component and the light emitting component are mounted on the display side of the liquid crystal panel. Therefore, the manufacturing operation of the liquid crystal device is facilitated, and damage to circuit components and the like is avoided.

  In the liquid crystal device according to the present invention, the width of the connection part in the extending direction of the side of the liquid crystal panel to which the flexible substrate is connected is ¼ or less of the length of the side, preferably 1 / It is 10 or less, more desirably 1/15 or less, and desirably 1/30 or more. For example, when the length of the side of the liquid crystal panel to which the flexible substrate is connected is about 40 mm, the width of the connection portion is preferably about 2 mm. With this configuration, the connection portion can be set to have a width that does not hinder the formation of the wiring pattern, and the position of the PCT substrate portion including the second region, which is the region where the light emitting component is provided, can be easily adjusted. The width can be set as narrow as possible, and the width can be set so as not to easily break during the manufacturing process of the liquid crystal device.

  Next, in the liquid crystal device according to the present invention, it is preferable that the light emitting surface of the light emitting component faces the liquid crystal panel when the flexible substrate is in the unfolded state. With this configuration, when the flexible substrate is bent twice, the light emitting surface of the light emitting component can be easily opposed to the liquid crystal panel. The liquid crystal panel can include a light guide that guides light from the light emitting component to the liquid crystal panel. When the liquid crystal panel having this configuration is used, it is desirable that the light emitting surface of the light emitting component is disposed at a position facing the light incident surface of the light guide by bending the flexible substrate.

  Next, in the liquid crystal device according to the present invention, it is preferable that the light emitting component is driven by a pulsed current, and the light amount of the light emitting component is controlled by a pulse width modulation method. If the power supply to the light emitting component is adjusted by PWM control, the power consumption of the lighting device can be saved and the battery life of the liquid crystal device can be extended. When the PWM control power supply method is adopted, there is a possibility that fluctuations in the current adversely affect the circuit components and disturb the image display. However, in the present invention, the first region where the circuit components are mounted and the second region where the light emitting components are mounted. Since the area is spatially separated, it is possible to prevent the current fluctuation during the PWM control from affecting the circuit components, and as a result, it is possible to prevent the image display from becoming unstable.

  Next, an electronic apparatus according to the present invention includes the liquid crystal device having the above-described configuration. Examples of such electronic devices include mobile phones and PDAs (Personal Digital Assistants). According to the liquid crystal device according to the present invention, it is possible to perform stable image display by the circuit components even though both the circuit components and the light emitting components are mounted on one flexible substrate. Can be manufactured at a very low cost. Therefore, even in an electronic device configured using this flexible substrate, an inexpensive and stable image display can be provided.

  Hereinafter, a liquid crystal device according to the present invention will be described based on embodiments. Of course, the present invention is not limited to this embodiment. Further, in the following description, the drawings will be referred to as necessary. In this drawing, in order to show the important components of the structure composed of a plurality of components in an easy-to-understand manner, May be indicated by dimensions.

FIG. 1A is a perspective view showing a state in which an embodiment of a liquid crystal device according to the present invention is viewed from the image display side. FIG. 1B is a perspective view illustrating a state in which the liquid crystal device is reversed from the front and the rear and viewed from the side opposite to the image display side (hereinafter also referred to as the non-display side). FIG. 2 is a cross-sectional view according to the line Z _B -Z _B in FIG. FIG. 3A shows a state in which an FPC (Flexible Printed Circuit) substrate is connected in an unfolded state to a liquid crystal panel which is a main component of the liquid crystal device of FIG. It is a perspective view. FIG. 3B is a perspective view showing a state in which the liquid crystal panel of FIG.

  In FIG. 1A, the liquid crystal device 1 includes a resin-made substantially rectangular frame 2 and a liquid crystal panel 3 accommodated in the frame 2. As shown in FIG. 1B, a lighting device 4 is accommodated in the frame 2 and below the liquid crystal panel 3. In FIG. 1A, the driving IC 5 is mounted on the short side surface of the front side of the liquid crystal panel 3 by, for example, COG (Chip On Glass) technology using an ACF (Anisotropic Conductive Film). Has been. Further, the FPC board 6 as a flexible board is connected to the side edge of the short side in a bent state.

  As shown in FIG. 2, the illuminating device 4 includes an LED (Light Emitting Diode) 9 as a light emitting component mounted on the surface of the FPC board 6 and a flat light guide 10 formed of a transparent resin. And a light reflection sheet 11 and a light diffusion sheet 12. On the light diffusion sheet 12, lens sheets 13a and 13b are provided. The light emitting surface 9 a of the LED 9 is disposed at a position facing the light incident surface of the light guide 10 by bending the FPC board 6. In this embodiment, the FPC board 6 is bent a plurality of times, specifically twice. In the case of this embodiment, the LED 9 is driven by a pulse current and lights up (actually blinks). In order to save power, the amount of emitted light is adjusted by PWM (Pulse Width Modulation) control.

  The liquid crystal panel 3 has a pair of substrates 16 and 17. These substrates are formed in a rectangular plate shape by glass, for example. These substrates are bonded to each other in a peripheral region inside thereof by a sealing material formed of, for example, an epoxy resin. A cell gap that is a gap of about 5 μm, for example, is formed between the substrates 16 and 17, and liquid crystal that is a light modulation element is sealed in the cell gap. Polarizing plates 18a and 18b are attached to the outer surfaces of the substrates 16 and 17, respectively. The polarization transmission axes of the polarizing plates 18a and 18b intersect at a predetermined angle. A retardation plate may be provided between the polarizing plates 18a and 18b and the substrates 16 and 17 as necessary. The driving IC 5 is mounted on the surface of the lower substrate 16 that protrudes outside the upper substrate 17 in the figure. The driving IC 5 includes a scanning line driving circuit, a data line driving circuit, and other circuits. The FPC board 6 is connected to a side edge portion of the lower board 16.

  The liquid crystal panel 3 is driven by an arbitrary liquid crystal driving method, for example, a simple matrix method or an active matrix method. The operation mode of the liquid crystal panel 3 is an arbitrary operation mode, for example, TN (Twisted Nematic), STN (Super Twisted Nematic), VA (Vertical Aligned Nematic), ECB (Electrically Controlled Birefringence). Each mode such as IPS (In-Plain Switching) and FFS (Fringe Field Switching) can be selected. Further, the liquid crystal panel 3 can employ any daylighting method, for example, a reflective type, a transmissive type, or a transflective type. The transflective type is a method that selectively adopts a reflective type and a transmissive type as necessary by using a part of a pixel as a reflective region and the other part as a transmissive region. In the present embodiment, since the illumination device 4 is arranged on the non-display side and used as a backlight, a transmissive type or a transflective type is employed as a lighting system.

  The simple matrix method is a matrix method in which each pixel does not have an active element, the intersection between the scan electrode and the data electrode corresponds to a pixel or a dot, and a drive signal is directly applied. There are TN, STN, VA, ECB, etc. as operation modes that are preferably used for this method. In the active matrix method, an active element is provided for each pixel or dot, and the active element is turned on in the writing period to write the data voltage, and the active element is turned off in other periods to hold the voltage. It is a matrix system. Active elements used in this method include a three-terminal type and a two-terminal type. An example of a three-terminal active element is a TFT (Thin Film Transistor). An example of a two-terminal active element is a TFD (Thin Film Diode).

  If an active matrix type liquid crystal panel using TFT elements is used as the liquid crystal panel 3, an electrical equivalent circuit is as shown in FIG. In FIG. 4, a plurality of scanning lines 21 are formed extending in the row direction X. A plurality of data lines 22 are formed extending in the column direction Y perpendicular to the scanning lines 21. The scanning line 21 and the data line 22 are insulated from each other by an insulating film. The scanning line 21 is connected to the output terminal of the scanning line driving circuit 23, and the data line 22 is connected to the output terminal of the data line driving circuit 24. Usually, a timing synchronization circuit (not shown) is connected to the scanning line driving circuit 23 and the data line driving circuit 24, and the operation timings of both are adjusted. The data line driving circuit 24 normally transmits image signals of R, G, B3 colors or R, G1, G2, B4 colors (details will be described later). The scanning line driving circuit 23 and the data line driving circuit 24 are provided inside the driving IC 5 shown in FIG.

  A sub-pixel P which is a minimum unit of on / off for image display is provided in a rectangular planar region surrounded by the scanning line 21 and the data line 22. A TFT element 25 is provided for each sub-pixel P near the intersection of the scanning line 21 and the data line 22. The scanning line 21 is connected to the gate electrode of the TFT element 25. The data line 22 is connected to the source electrode of the TF element 25. In each sub-pixel P, an island-shaped (that is, dot-shaped) pixel electrode 26 is a light-transmitting conductive material such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide). ). Each pixel electrode 26 is connected to the drain electrode of the corresponding TFT element 25.

  Although not shown, an auxiliary capacitor can be provided for each sub-pixel P as necessary. This auxiliary capacitance is provided to prevent the capacitance associated with the pixel electrode 26 from becoming too small. The auxiliary capacitance includes, for example, a first electrode formed in the same layer as the gate electrode of the TFT element 25 in parallel with the scanning line 21 and an insulating film (usually the gate of the TFT element). And a second electrode formed on the insulating film in each sub-pixel P and in the same layer as the drain electrode of the TFT element.

  The above-described configuration related to the sub-pixel P is generally provided on the liquid crystal side surface of the substrate 16 on which the driving IC 5 is mounted in FIG. On the surface of the counter substrate 17 on the liquid crystal side, a planar common electrode facing the plurality of subpixels P is formed of ITO, IZO or the like. The common electrode is conductively connected to the driving IC 5 through a wiring pattern formed on the substrates 16 and 17 and a conductive member provided between the substrate 16 and the substrate 17.

  In the case of performing color display on the liquid crystal panel 3, a color filter is provided on one of the pair of substrates 16 and 17 (usually a substrate facing the substrate on which the TFT element is provided). The color filter is formed by a plurality of colored films that selectively transmit light in a specific wavelength range. For example, B (blue), G (green), and R (red) are arranged in a predetermined arrangement, for example, a stripe arrangement, a delta arrangement, and a mosaic arrangement, corresponding to each sub-pixel P on the substrate one by one. Formed by. In addition to the two colors R and B, a color filter can be configured with four colors by adding two colors G (G1 and G2). If four colored films are used, the color reproduction area on the NTSC ratio can be expanded, and each color tone can be expressed richly.

  In FIG. 4, when an ON signal is transmitted to an appropriate scanning line 21 and a data signal is transmitted to an appropriate data line 22 in the scanning line, the corresponding TFT element 25 is turned on, and the corresponding sub-pixel P Writing to the liquid crystal inside is performed. When the TFT element 25 is subsequently turned off, the written state is maintained. By this series of writing operation and holding operation, the orientation of the liquid crystal molecules is controlled, and the polarized light passing through the liquid crystal layer is modulated.

  3A, the frame 2 and the illumination device 4 (see FIG. 1B) are removed from the liquid crystal device 1 shown in FIG. 1A, and the FPC board 6 is extended from the bent state to the expanded state. Indicates the state. FIG. 3B shows a state in which the liquid crystal panel 3 and the FPC board 6 shown in FIG. The FPC board 6 is not formed by connecting a plurality of FPC boards, but is formed by a single FPC board. The FPC board 6 has a copper wiring pattern formed on a polyimide base film by a photo-etching process on a polyimide base film as in a known configuration, a polyimide cover lay film is provided on the copper wiring pattern, and circuit components are provided at necessary locations. It is formed by mounting. Of course, other laminated structures can be adopted as required.

  In FIG. 3B, the FPC board 6 has a first area A1 where the circuit component 29 for driving the liquid crystal panel 3 is mounted and a second area where the LED 9 which is a light emitting component is mounted. And an area A2. Examples of the circuit component 29 include a resistor, a coil, a capacitor, a variable resistor, and an IC (Integrated Circuit). A circuit for driving the liquid crystal panel is configured by connecting these circuit components with an appropriate wiring pattern. The portion including the first region A1 and the portion including the second region A2 in the FPC board 6 are connected by a thin linear connecting portion 30. The first region A1 and the second region A2 are spatially separated from each other in the portion other than the connection portion 30. By separating the first region A1 and the second region A2 in this way, when the LED 9 is driven by PWM control, the pulsation or fluctuation of the current supplied to the LED 9 in the second region A2 is the first region. The circuit component 29 in A1 can be prevented from being adversely affected, and the image display on the liquid crystal panel 3 can always be performed stably.

  An extending portion 31 extending toward the second region A2 is formed on the portion of the FPC board 6 provided with the first region A1. A connector 32 is mounted on the surface of the extending portion 31. A wiring pattern extending from the output terminal of the connector 32 toward the circuit component 29 and a wiring pattern extending from the output terminal of the connector 32 toward the LED 9 are formed on the surface of the FPC board 6. The wiring pattern extending toward the LED 9 is formed so as to pass through a position as far as possible from the first region A1 where the circuit component 29 is provided. Thereby, it can suppress that the drive current of LED9 exerts a bad influence on the operation | movement of the liquid crystal panel drive circuit comprised by the circuit component 29. FIG.

  In the liquid crystal panel 3 in the state shown in FIG. 3A, the side in which the image display area V is visually recognized, that is, the side on which an image is displayed (hereinafter sometimes referred to as the display side) is seen on the upper side. In the liquid crystal panel 3 in the state shown in FIG. 3B, the side opposite to the display side (hereinafter sometimes referred to as the non-display side) is visible on the upper side. When the FPC board 6 is connected to the liquid crystal panel 3 and is in the unfolded state as shown in FIGS. 3A and 3B, the surface of the FPC board 6 facing the same side as the display side of the liquid crystal panel 3 is The surface of the FPC board 6 facing the same side as the non-display side of the liquid crystal panel 3 is referred to as a second surface S2. As will be described later, the FPC board 6 is disposed at a predetermined position in the liquid crystal device 1 in a state in which the FPC board 6 is subjected to a predetermined bending process. However, the first surface S1 of the FPC board 6 is bent so that the non-display side is arranged. Even when facing, it is still the first surface S1. Further, the second surface S2 of the FPC board 6 is still the second surface S2 even when it is bent and faces the display side.

  The circuit component 29, the connector 32, and the LED 9 mounted on the FPC board 6 are all mounted on the second surface S2 (surface facing the non-display side of the liquid crystal panel 3 in the unfolded state) of the FPC board 6. That is, the mounting components 9, 29, and 32 are mounted on the FPC board 6 in the form of single-side mounting. As a mounting form, double-sided mounting can be considered in addition to single-sided mounting. In this double-sided mounting, a part of the mounting component is mounted on one surface, and the other mounting component is mounted on the opposite surface. In other words, the component is mounted on both sides of the FPC board. In the case of double-sided mounting, SMT (Surface Mount Technology) processing, for example, solder reflow processing, must be performed twice on each side in total. However, in single-sided mounting, SMT processing is only required once, which reduces the manufacturing process and manufacturing cost. It can be kept low.

  The width of the connection portion 30 along the extending direction of the edge of the liquid crystal panel 3 in the portion to which the FPC board 6 is connected should not interfere with the formation of the wiring pattern formed in the connection portion 30. Considering the fact that the position of the PCT substrate portion including the second area A2, which is the area where the LED 9 is provided, is so narrow that it can be easily adjusted, and that it is not easily broken during the manufacturing process of the liquid crystal device. Set in. For example, it is 1/4 or less, preferably 1/10 or less, more preferably 1/15 or less of the length of the edge of the liquid crystal panel 3 to which the FPC board 6 is connected. In addition, the width of the connection portion 30 is desirably 1/30 or more of the length of the side of the liquid crystal panel 3. More specifically, if the length of the side is about 40 mm, the width of the connecting portion 30 is about 2 mm.

  The FPC board 6 shown in FIGS. 3A and 3B is assembled into the liquid crystal device 1 shown in FIGS. 1 and 2 in a state of being bent in a predetermined procedure. Hereinafter, the bending procedure of the FPC board 6 will be described. 5A is an enlarged view of the FPC board 6 shown in FIG. 3B, and the second surface S2 of the unfolded FPC board 6 connected to the liquid crystal panel 3 is connected to the non-display side of the liquid crystal panel 3. FIG. The state seen from. FIGS. 5B and 5C show the bent state of the FPC board 6 from FIG. In the developed state of FIG. 5A, a root portion connected to a portion including the first region A1, which is a region in which the circuit component 29 is provided, of the connection portion 30 of the FPC board 6 is denoted by reference numeral B1. Moreover, the base part connected to the part containing 2nd area | region A2 which is an area | region in which LED9 was provided among the connection parts 30 of FPC board 6 is shown with code | symbol B2. The portion B1 becomes a first bent portion, and the portion B2 becomes a second bent portion. The second bent portion B2 is farther from the liquid crystal panel 3 than the first bent portion B1 and is closer to the liquid crystal panel 3 than the second region A2 in the unfolded state of the FPC board 6.

FIG. 6A is a cross-sectional view of the liquid crystal panel 3 and the FPC board 6 shown in FIG. 5A as viewed along the Z _F -Z _F line with the front and back reversed. FIGS. 6B and 6C are cross-sectional views of corresponding cross-sectional portions of FIGS. 5B and 5C, respectively. 5A and 6A, the LED 9 mounted on the second surface S2 (surface on the non-display side in the unfolded state) of the FPC board 6 protrudes toward the non-display side, and the light-emitting surface 9a is a liquid crystal panel. The direction of 3. From this state, the FPC board 6 is first bent toward the liquid crystal panel 3 so that the second surfaces S2 face each other at the first bent portion B1 of the connecting portion 30 as shown by an arrow C in FIG. b) and the state shown in FIG. In this state, the LED 9 protrudes toward the display side on the back surface of the liquid crystal panel 3, and the light emitting surface 9 a faces away from the side surface of the liquid crystal panel 3.

  Next, the FPC board 6 is bent in a direction away from the liquid crystal panel 3 so that the first surfaces S1 face each other at the second bent portion B2 of the connecting portion 30 as shown by an arrow D in FIG. ) And the folded state shown in FIG. In this state, the LED 9 protrudes toward the non-display side on the back surface of the liquid crystal panel 3, and the light emitting surface 9 a faces the liquid crystal panel 3. Since the width of the connection portion 30 is narrow, the operation when the connection portion 30 of the FPC board 6 is bent as described above can be performed without difficulty. Further, an excessive reaction force is not generated in the bent connection portion 30.

  After the FPC board 6 is bent as described above, in FIG. 2, the resin frame 2 is fitted into the liquid crystal panel 3 and the FPC board 6 from the back side (lower side in the figure) of the liquid crystal panel 3. Thereby, the position of the liquid crystal panel 3 and the LED 9 with respect to the frame 2 is determined. It is desirable that an LED support portion for positioning the LED 9, for example, a convex portion or a concave portion is provided in advance at an appropriate position of the frame 2. Since the width of the connection portion 30 is set to be thin enough to be deformed relatively freely, when the frame 2 is mounted on the liquid crystal panel 3 and the FPC board 6, the LED 9 is in accordance with the movement of the LED support portion of the frame 2. It moves freely and is always arranged at a fixed position with respect to the frame 2 by the LED support portion.

  Next, the illuminating device 4 is incorporated in a space portion existing in the area surrounded by the frame 2 and on the back side (that is, the non-display side) of the liquid crystal panel 3 supported by the frame 2. Thus, the liquid crystal device 1 is completed. If necessary, a metal (for example, stainless steel) frame, a so-called gold frame, can be assembled to the resin frame 2 so as to cover both or either the liquid crystal panel 3 side and the lighting device 4 side of the frame 2. When a gold frame is assembled on the liquid crystal panel 3 side of the frame 2, an opening for visually recognizing the image display region V is provided in the gold frame.

  As described above, in the liquid crystal device 1 of the present embodiment, since the FPC board 6 is not formed by connecting a plurality of FPC boards to form the FPC board 6, a plurality of FPC boards are formed. Compared with the case of connecting the substrates, the component cost and the manufacturing cost can be kept low.

  Further, in the present embodiment, as shown in FIG. 3B, the circuit component 29 for driving the liquid crystal panel and the LED 9 as the light emitting component are mounted on one side on the single FPC board 6. Since it is a single-sided mounting, it is possible to easily perform SMT processing and the like, and therefore, the manufacturing cost can be kept low.

  When two types of components are mounted on a single FPC board, there is a possibility that one component may electrically adversely affect the other component. For example, when the LED 9 is controlled to be lit based on PWM (pulse width modulation) control as in the present embodiment, the pulsation or fluctuation of the pulse width modulated current signal adversely affects the liquid crystal panel drive signal, and image display is not performed. May become unstable. On the other hand, in the present embodiment, an FPC board portion including the first area A1 which is an area where the circuit component 29 is provided and an FPC board portion including the second area A2 where the LED 9 is provided are necessary. Spatial separation is provided, leaving the connection portion 30 as a minimum portion. Accordingly, it is possible to prevent the quality of image display performed using the circuit component 29 from becoming unstable even though the circuit component 29 and the LED 9 are mounted on a single FPC board.

  Further, as shown in FIG. 6A, all the mounted components of the circuit component 29, the connector 32, and the LED 9 are mounted on the second surface S2 of the FPC board 6, that is, the non-display side of the liquid crystal panel 3. . For this reason, no mounted products are placed on the first surface S1 side of the FPC board 6 corresponding to the display side of the liquid crystal panel 3. If any mounted product is placed on the first surface S1, the mounted product often makes a business trip beyond the surface of the liquid crystal panel 3 on the display side. This protruding state is a factor that significantly reduces the workability in the manufacturing operation of the liquid crystal device, and in some cases, the mounted product may be damaged. On the other hand, in the present embodiment, since all the mounted products are hidden on the non-display side, the manufacturing operation of the liquid crystal device is facilitated, and damage to the mounted products is avoided.

(Other embodiments)
The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the embodiments, and various modifications can be made within the scope of the invention described in the claims.
For example, in the above embodiment, as shown in FIG. 3, the connecting portion 30 of the FPC board 6 is formed to be offset from the end portion of the main body portion of the FPC board 6, but the connecting portion 30 is formed at any other position. You may do it. For example, you may form in the center part of a main-body part. The connector 32 can also be soldered. Further, the illustrated arrangement form of the circuit component 29 is merely an example, and in fact, any other arrangement form can be taken.

Hereinafter, the present invention will be clarified by describing comparative examples.
(Comparative Example 1)
FIG. 7 shows a liquid crystal device according to a first comparative example. FIG. 8 shows a liquid crystal panel and an FPC board which are main components of the liquid crystal device, and in particular, the FPC board shows a developed state. 7A and 7B, the liquid crystal device has a resin frame 52 in which a liquid crystal panel 53 and an illumination device 54 are incorporated. A driving IC 55 is mounted on an edge portion of one substrate constituting the liquid crystal panel 53, and an FPC substrate 56 is connected to the edge thereof.

  As shown in FIGS. 8A and 8B, the FPC board 56 is formed of two FPC boards, that is, a liquid crystal panel FPC board 56a and an LED FPC board 56b. The liquid crystal panel FPC board 56 a includes an LED connector 62, a circuit component 69 for driving the liquid crystal panel, and an interface connector 63. The LED FPC board 56 b has LEDs 59. The LED FPC board 56b includes a terminal portion 64 at the tip of a portion extending from a portion where the LED 59 is mounted. As shown in FIG. 7B, the liquid crystal panel FPC board 56a and the LED FPC board 56b are connected by connecting the terminal portion 64 of the LED FPC board 56b to the LED connector 62 on the liquid crystal panel FPC board 56a. It is connected. In this connected state, the LEDs 59 on the LED FPC board 56 b are arranged in a predetermined position with respect to the illumination device 54 in the frame 52.

  In this comparative example, the FPC board 56 is configured by connecting a liquid crystal panel FPC board 56a and an LED FPC board 56b, which are two separate FPC boards. Since the FPC board 56a for the liquid crystal panel and the FPC board 56b for the LED are manufactured by independent manufacturing processes, the number of manufacturing steps is increased and the manufacturing cost is increased as compared with the case of the present invention using only one FPC board. .

(Comparative Example 2)
FIG. 9 shows a liquid crystal device according to a second comparative example. FIG. 10 shows a liquid crystal panel and an FPC board which are main components of the liquid crystal device, and in particular, the FPC board shows a developed state. 9A and 9B, the liquid crystal device has a resin frame 52 in which a liquid crystal panel 53 and an illumination device 54 are incorporated. A driving IC 55 is mounted on an edge portion of one substrate constituting the liquid crystal panel 53, and an FPC substrate 56 is connected to the edge thereof.

  As shown in FIG. 10, the FPC board 56 is formed by connecting a portion where a circuit component 69 for driving a liquid crystal panel is mounted and a portion where an LED 59 is mounted by a connection portion 70. The FPC board part on which the circuit component 69 is mounted has an extending part extending to the side of the FPC board main body part (above FIG. 10A), and a connector 63 is provided at the tip of the extending part. It has been. The light emitting surface 59a of the LED 59 faces toward the opposite side of the liquid crystal panel 53 when the FPC board 56 is in the unfolded state.

  The FPC board 56 is bent only once toward the liquid crystal panel 53 so that the second surfaces S2 face each other at the bent portion B3 of the connecting portion 70. Then, after the FPC board 56 is bent in this way, the frame 52 is assembled to the liquid crystal panel 53 and the FPC board 56 as shown in FIG. 9B, and the illumination device 54 is connected to the non-display side of the liquid crystal panel 53. As a result, the liquid crystal device is completed.

  In this comparative example, circuit components 69, connectors 63, and LEDs 59, which are mounting components, are mounted on the first surface S1 side of the FPC board 56, which is the same side as the display side of the liquid crystal panel 53. This mounting form is inevitably related to the fact that the FPC board is bent only once. When the circuit component 69 or the like is mounted on the first surface S1 side of the FPC board 56, the circuit component 69 or the like travels higher than the surface of the liquid crystal panel 53, as is apparent from FIG. There is a possibility that workability may be deteriorated or the circuit component 69 may be damaged during the work.

  On the other hand, in the present invention, as shown in FIG. 6A, the circuit components 29 and the like are all mounted on the second surface S2 of the FPC board 6, that is, the non-display side of the liquid crystal panel 3. For this reason, no mounted product is placed on the first surface S1 side of the FPC board 6 corresponding to the display side of the liquid crystal panel 3. For this reason, the manufacturing operation of the liquid crystal device is facilitated, and damage to the mounted product is avoided.

(Comparative Example 3)
FIG. 11 shows a liquid crystal device according to a third comparative example. FIG. 12 shows a liquid crystal panel and an FPC board which are main components of the liquid crystal device, and in particular, the FPC board shows a developed state. 11A and 11B, the liquid crystal device has a resin frame 52, and a liquid crystal panel 53 and an illumination device 54 are incorporated in the frame 52. A driving IC 55 is mounted on an edge portion of one substrate constituting the liquid crystal panel 53, and an FPC substrate 56 is connected to the edge thereof.

  As shown in FIG. 12, the FPC board 56 has circuit components 69 for driving the liquid crystal panel and LEDs 59 mounted together in a common area A3. The FPC board portion provided with the region A3 has an extending portion extending to the side of the FPC board main body portion (upward in FIG. 12A), and a connector 63 is provided at the tip of the extending portion. ing. The light emitting surface 59a of the LED 59 faces toward the opposite side of the liquid crystal panel 53 when the FPC board 56 is in the unfolded state.

  The FPC board 56 is bent only once toward the liquid crystal panel 53 so that the second surfaces S2 face each other at a portion indicated by reference numeral B4, which is a portion near the side of the liquid crystal panel 53. After the FPC board 56 is bent in this way, the frame 52 is assembled to the liquid crystal panel 53 and the FPC board 56 as shown in FIG. 11B, and the illumination device 54 is connected to the non-display side of the liquid crystal panel 53. As a result, the liquid crystal device is completed.

  In this comparative example, circuit components 69, connectors 63, and LEDs 59, which are mounting components, are mounted on the second surface S2 side of the FPC board 56, which is the same side as the non-display side of the liquid crystal panel 53. For this reason, the circuit component 69 or the like does not travel higher than the display-side surface of the liquid crystal panel 53, and the workability does not deteriorate or the circuit component 69 or the like is not damaged during the operation. However, in this embodiment, the circuit component 69 for driving the liquid crystal panel and the LED 59 are provided in a mixed state in the common area A3, so that the LED driving current (for example, PWM current) is used for the operation of the liquid crystal panel driving circuit. There is a risk that the image display will be disturbed.

  On the other hand, in the present invention, as shown in FIG. 5A, the FPC board portion including the first area A1, which is the area where the liquid crystal panel driving component 29 is provided, and the area where the LED 9 is provided. The FPC board portion including the second region A2 is spatially separated from each other while leaving the connection portion 30 which is a necessary minimum portion. As a result, the quality of image display performed using the liquid crystal panel driving component 29 becomes unstable even though the liquid crystal panel driving component 29 and the LED 9 are mounted on a single FPC board. Can be prevented.

(Comparative Example 4)
FIG. 13 shows a liquid crystal device according to a fourth comparative example. FIG. 14 shows a liquid crystal panel and an FPC board which are main components of the liquid crystal device, and in particular, the FPC board shows a developed state. 13A and 13B, the liquid crystal device has a resin frame 52, and a liquid crystal panel 53 and an illumination device 54 are incorporated in the frame 52. A driving IC 55 is mounted on an edge portion of one substrate constituting the liquid crystal panel 53, and an FPC substrate 56 is connected to the edge thereof.

  As shown in FIG. 14, the FPC board 56 is formed by connecting a portion where a circuit component 69 for driving a liquid crystal panel is mounted and a portion where an LED 59 is mounted by a connecting portion 70. The FPC board portion on which the circuit component 69 is mounted has an extending portion extending to the side of the FPC board main body portion (upward in FIG. 14A), and a connector 63 is provided at the tip of the extending portion. It has been. The light emitting surface 59a of the LED 59 faces toward the opposite side of the liquid crystal panel 53 when the FPC board 56 is in the unfolded state.

  The FPC board 56 is bent only once toward the liquid crystal panel 53 so that the second surfaces S2 face each other at the bent portion B5 of the connecting portion 70. After the FPC board 56 is bent in this way, the frame 52 is assembled to the liquid crystal panel 53 and the FPC board 56 as shown in FIG. 13B, and the illumination device 54 is connected to the non-display side of the liquid crystal panel 53. As a result, the liquid crystal device is completed.

  In this comparative example, the circuit component 69 and the connector 63 which are mounting components are mounted on the second surface S2 side of the FPC board 56 which is the same side as the non-display side of the liquid crystal panel 53. The LED 59 is mounted on the first surface S1 side of the FPC board 56, which is the same side as the display side of the liquid crystal panel 53. That is, a plurality of components are mounted on both sides of the FPC board 56. This mounting form is inevitably related to the fact that the FPC board is bent only once. When double-sided mounting is performed, SMT processing must be performed twice on both sides of the FPC board in total, resulting in high manufacturing costs. On the other hand, in the present invention, as shown in FIG. 6A, the circuit component 29 and the like are mounted on the second surface S2 on one side, so that the SMT process can be performed once, and the manufacturing cost can be kept low. .

  In the comparative example shown in FIG. 14, the LED 59 is mounted on the first surface S <b> 1 of the FPC board 56 that is the same side as the display side of the liquid crystal panel 53. For this reason, the LED 59 travels higher than the surface on the display side of the liquid crystal panel 53, and workability may be deteriorated, or the LED 59 and the like may be damaged during the work. On the other hand, in the present invention, as shown in FIG. 6A, the LEDs 9 and the like are all mounted on the second surface S2 of the FPC board 6, that is, the non-display side of the liquid crystal panel 3. For this reason, no mounted products are placed on the first surface S1 side of the FPC board 6 corresponding to the display side of the liquid crystal panel 3. For this reason, the manufacturing operation of the liquid crystal device is facilitated, and damage to the mounted product is avoided.

(Comparative Example 5)
FIG. 15 shows a liquid crystal device according to a fifth comparative example. FIG. 16 shows a liquid crystal panel and an FPC board which are main components of the liquid crystal device, and in particular, the FPC board shows a developed state. 15A and 15B, the liquid crystal device has a resin frame 52, and a liquid crystal panel 53 and an illumination device 54 are incorporated in the frame 52. A driving IC 55 is mounted on an edge portion of one substrate constituting the liquid crystal panel 53, and an FPC substrate 56 is connected to the edge thereof.

  As shown in FIG. 16, on the FPC board 56, circuit components 69 for driving the liquid crystal panel and LEDs 59 are collectively mounted in a common area A4. The FPC board 56 has an extending portion extending from the portion where the region A4 is provided to the opposite side of the liquid crystal panel 53, and a connector 63 is provided at the tip of the extending portion. The light emitting surface 59a of the LED 59 faces the liquid crystal panel 53 when the FPC board 56 is in the unfolded state.

  The FPC board 56 is first bent toward the non-display side of the liquid crystal panel 53 at a portion B6 close to the side of the liquid crystal panel 53 (first bending). Next, the FPC board 56 is further bent in a direction away from the liquid crystal panel 53 at a portion B7 close to the LED 59, and is in a state shown in FIG. 15B (second bending). After the FPC board 56 is bent in this manner, the frame 52 is assembled to the liquid crystal panel 53 and the FPC board 56 as shown in FIG. 15B, and the illumination device 54 is connected to the non-display side of the liquid crystal panel 53. As a result, the liquid crystal device is completed. In this comparative example, the circuit component 69 for driving the liquid crystal panel and the LED 59 are provided in a mixed state in the common area A4, so that the LED driving current (for example, PWM current) adversely affects the operation of the liquid crystal panel driving circuit. The image display may be disturbed.

  On the other hand, in the present invention, as shown in FIG. 5A, the FPC board portion including the first area A1, which is the area where the circuit component 29 for driving the liquid crystal panel is provided, and the area where the LED 9 is provided. The FPC board portion including the second region A2 is spatially separated from each other while leaving the connection portion 30 which is a necessary minimum portion. Accordingly, it is possible to prevent the quality of image display performed using the circuit component 29 from becoming unstable even though the circuit component 29 and the LED 9 are mounted on a single FPC board.

(First Embodiment of Electronic Device)
Next, an embodiment of an electronic device according to the present invention will be described. In addition, this embodiment shows an example of this invention and this invention is not limited to this embodiment. FIG. 17 shows an embodiment of an electronic apparatus according to the invention. The electronic device shown here includes a liquid crystal device 101 and a control circuit 102 that controls the liquid crystal device 101. The liquid crystal device 101 includes a liquid crystal panel 103 and a drive circuit 104. The control circuit 102 includes a display information output source 105, a display information processing circuit 106, a power supply circuit 107, and a timing generator 108.

  The display information output source 105 includes a memory such as a RAM (Random Access Memory), a storage unit such as various disks, a tuning circuit that tunes and outputs a digital image signal, and various clock signals generated by the timing generator 108. The display information processing circuit 106 is supplied with display information such as a predetermined format image signal.

  The display information processing circuit 106 includes a number of well-known circuits such as an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, a clamp circuit, and the like, executes processing of input display information, and converts an image signal into a clock signal CLK. At the same time, it is supplied to the drive circuit 104. Here, the drive circuit 104 is a generic term for an inspection circuit and the like together with a scanning line drive circuit and a data line drive circuit. The power supply circuit 107 supplies a predetermined power supply voltage to each of the above components.

  The liquid crystal device 101 is configured using, for example, the liquid crystal device 1 shown in FIG. According to the liquid crystal device 1, a stable image display can be performed by the liquid crystal panel driving component 29 even though both the liquid crystal panel driving component 29 and the LED 9 are mounted on one FPC board 6. In addition, the FPC board 6 can be manufactured at a very low cost. Therefore, even in the present electronic apparatus configured using the FPC board 6, it is possible to provide an inexpensive and stable image display. If the LED 9 is controlled to be turned on by PWM control, power consumption can be saved and the life of the power supply circuit 107 can be extended. Moreover, even in this case, the liquid crystal panel driving component 29 can perform stable image display by the separation structure of the FPC board 6.

(Second Embodiment of Electronic Device)
FIG. 18 shows a mobile phone which is another embodiment of the electronic apparatus according to the invention. A cellular phone 110 shown here includes a main body 111 and a display body 112 that can be opened and closed with respect to the main body 111. The display unit 112 is provided with a display device 113 and a receiver 114. Various displays relating to telephone communication are displayed on the display screen 115 of the display device 113. A control unit for controlling the operation of the display device 113 is stored inside the main body unit 111 or the display body unit 112 as a part of the control unit that controls the entire mobile phone or separately from the control unit. The The main body 111 is provided with an operation button 116 and a transmitter 117.

  The display device 113 is configured using, for example, the liquid crystal device 1 shown in FIG. According to the liquid crystal device 1, a stable image display can be performed by the liquid crystal panel driving component 29 even though both the liquid crystal panel driving component 29 and the LED 9 are mounted on one FPC board 6. In addition, the FPC board 6 can be manufactured at a very low cost. Therefore, even in the present electronic apparatus configured using the FPC board 6, it is possible to provide an inexpensive and stable image display. Further, if the LED 9 is controlled to be turned on by PWM control, power consumption can be saved, which is very convenient particularly for a mobile phone. Moreover, even in this case, the liquid crystal panel driving component 29 can perform stable image display by the separation structure of the FPC board 6.

The electronic device of the present invention has been described with reference to the preferred embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made within the scope of the invention described in the claims.
For example, the present invention is not limited to a mobile phone, but a personal computer, a liquid crystal television, a viewfinder type or a monitor direct-view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a workstation, a videophone device, The present invention can be applied to various electronic devices such as a POS terminal, a digital still camera, and an electronic book.

1 shows an embodiment of a liquid crystal device according to the present invention, in which (a) is a perspective view from the image display side, and (b) is a perspective view from the non-display side in an inverted state. Is a sectional view taken along _Z B -Z _B line in FIG. 1 (a). 1A and 1B show a liquid crystal panel and an FPC board, which are main components of the liquid crystal device of FIG. 1, wherein FIG. 1A is a perspective view from an image display side, and FIG. 2B is a perspective view from a non-display side that is in an inverted state. . It is a block diagram of the electrical equivalent circuit of a liquid crystal device. It is a figure which shows the bending process of a FPC board | substrate. It is sectional drawing corresponding to FIG. It is a figure which shows the comparative example of a liquid crystal device, (a) is a top view, (b) is side sectional drawing. 7A and 7B show a liquid crystal panel and an FPC board, which are main components of the liquid crystal device of FIG. 7, in which FIG. 7A is a plan view and FIG. It is a figure which shows the other comparative example of a liquid crystal device, (a) is a top view, (b) is side sectional drawing. 9A and 9B show a liquid crystal panel and an FPC board as main components of the liquid crystal device of FIG. 9, wherein FIG. 9A is a plan view and FIG. 9B is a side cross-sectional view. It is a figure which shows the other comparative example of a liquid crystal device, (a) is a top view, (b) is side sectional drawing. 11A and 11B show a liquid crystal panel and an FPC board, which are main components of the liquid crystal device of FIG. 11, wherein FIG. 11A is a plan view and FIG. 11B is a side sectional view. It is a figure which shows the other comparative example of a liquid crystal device, (a) is a top view, (b) is side sectional drawing. 13A and 13B show a liquid crystal panel and an FPC board, which are main components of the liquid crystal device of FIG. 13, in which FIG. 13A is a plan view and FIG. It is a figure which shows the other comparative example of a liquid crystal device, (a) is a top view, (b) is side sectional drawing. FIG. 16 shows a liquid crystal panel and an FPC board, which are main components of the liquid crystal device of FIG. 15, wherein (a) is a plan view and (b) is a side sectional view. It is a block diagram which shows one Embodiment of an electronic device. It is a perspective view which shows the mobile telephone which is other embodiment of an electronic device.

Explanation of symbols

1. 1. liquid crystal device Frame, 3. Liquid crystal panel, 4. Lighting equipment,
5). Driving IC, 6. 8. FPC board (flexible board), LED (light emitting component),
9a. Light emitting surface, 10. 10. light guide; Light reflecting sheet, 12. Light diffusion sheet,
13a, 13b. Lens sheet, 16,17. Substrates, 18a, 18b. Polarizer,
21. Scanning line, 22. Data line, 25. TFT element, 26. Pixel electrodes,
29. Circuit components, 30. Connection part, 31. Extension, 32. connector,
101. Liquid crystal device, 102. Control circuit, 103. Liquid crystal panel, 104. Drive circuit,
110. Mobile phone (electronic device), 113. Display device, A1. First region,
A2. Second region, B1. 1st bending part, B2. 2nd bending part, P.I. Sub-pixel,
X. Row direction, Y. Column direction; Image display area

Claims (8)

In a liquid crystal device having a liquid crystal panel for displaying an image and a flexible substrate connected to the liquid crystal panel, wherein the flexible substrate is bent from an unfolded state.
The flexible substrate has a first region on which circuit components are mounted, a second region on which light-emitting components are mounted, and a connecting portion that connects the first region and the second region;
The second region is located farther from the liquid crystal panel than the first region in the unfolded state,
The first region and the second region are separated from each other in a portion other than the connection portion,
The connecting portion has a first bent portion and a second bent portion,
The second bent portion is located at a position farther from the liquid crystal panel than the first bent portion in the unfolded state and closer to the liquid crystal panel than the second region,
The connecting portion is bent at the first bent portion to the side opposite to the image display side of the liquid crystal panel, and the connecting portion is bent at the second bent portion in a direction away from the liquid crystal panel. A liquid crystal device characterized by the above.   2. The liquid crystal device according to claim 1, wherein the circuit component and the light emitting component are arranged in the unfolded state when the flexible substrate is connected to the liquid crystal panel. A liquid crystal device provided on a surface opposite to a side on which the image is displayed. The liquid crystal device according to claim 1 or 2,
The liquid crystal device according to claim 1, wherein the width of the connection portion in the extending direction of the side of the liquid crystal panel to which the flexible substrate is connected is ¼ or less of the length of the side.   4. The liquid crystal device according to claim 1, wherein the flexible substrate is a single substrate that is not connected. 5.   5. The liquid crystal device according to claim 1, wherein a light emitting surface of the light emitting component faces a direction of the liquid crystal panel when the flexible substrate is in the unfolded state. Liquid crystal device.   6. The liquid crystal device according to claim 1, further comprising a light guide that guides light from the light emitting component to the liquid crystal panel, wherein the light emitting surface of the light emitting component is the flexible substrate. The liquid crystal device is arranged at a position facing the light incident surface of the light guide by being bent.   7. The liquid crystal device according to claim 1, wherein the light emitting component is driven by a pulsed current, and the amount of light of the light emitting component is controlled by a pulse width modulation method. apparatus.   An electronic apparatus comprising the liquid crystal device according to claim 1.

Images