Electro-optic display device

Abstract

An electro-optic display device (1) comprising an electro-optic display and a plurality of foils (100, 101, 102) arranged on top of each other and in front of the electro-optic display such that the plurality of foils (100, 101, 102) is located between the electro-optic display and a potential viewer or observer of the electro-optic display device (1). The foils (100, 101, 102) comprise centering features (120) for centering the foils (100, 101, 102) in a frame (200) of the electro-optic display device (1), and the foils (100, 101, 102) are connected in a jointed manner.

Description

Summary of the Invention

[0001] This invention relates to an electro-optic display device comprising an electro-optic display and a plurality of foils arranged vertically above and in front of the electro-optic display, such that the foils are positioned between the electro-optic display and a potential viewer or observer of the electro-optic display device. These foils serve, for example, to improve the uniformity of brightness of the electro-optic display and / or to expand or reduce the possible viewing angle from which an observer can view the information displayed on the electro-optic display. These foils include centering features that hold the optical foils in place. Due to increasingly smaller spaces available for displays (especially in automotive applications), the thickness of electro-optic display devices must be small, such that the thickness of the frame of the electro-optic display device including the centering features may be approximately 0.6 mm. Furthermore, in automotive applications, vibration testing is performed, which prevents the foils from perfectly maintaining their intended positions, resulting in friction marks and blackness uniformity problems. The object of this invention is to improve the positioning of the foils and ensure that they remain within the intended area even during vibration testing. This object is achieved by connecting the foils together in a linked manner. This connection can be provided by any possible connection measure that can be used to connect two or more foils together, such as by using adhesive to connect the foils together.

[0002] Preferably, the foil sheets are joined together by welding them together.

[0003] If the foils are welded together in the area of ​​the centering feature, these areas become stable and can easily work with the centering feature of the electro-optical display device.

[0004] If the foil includes protrusions, these protrusions can function as centering features together with the recesses of the electro-optical display device for centering.

[0005] The foils are positioned by protrusions arranged one after another on adjacent foils, which become robust elements for centering.

[0006] If these protrusions are welded together, the resulting protrusions are well-suited for centering, and the welded area can be outside the visible area of ​​the foil, so that the image displayed by the electro-optical display is unaffected by any welded structure.

[0007] A good centering result was achieved by positioning the protrusion in the recess located in the electro-optical display device.

[0008] If the recess is positioned within the backplate of the electro-optical display device, a suitable location for the recess is achieved. This backplate should be in a defined position and be directly connected to the electro-optical display. Attached Figure Description

[0009] The invention will now be described by way of possible constructions of particular preferred embodiments.

[0010] Figure 1 A view of an electro-optical display device for a particularly preferred example of the present invention is shown.

[0011] Figure 2 It shows along Figure 1 A cross-sectional view of AA.

[0012] Figure 3 It shows along Figure 2 A cross-sectional view of BB. Detailed Implementation

[0013] exist Figure 1 As can be seen in the image, the electro-optical display device 1 includes a top foil 100 and a frame 200. The frame includes internal limiting parts 201, 202, 203, and 204. Several other foils are disposed below the top foil 100 (see [link to image]). Figure 2 ), and an electro-optical display is arranged beneath these foils, such that the image displayed by the electro-optical display is visible in the area enclosed by the frame 200, because these foils ( Figure 1 The 100 in the figure does not block the light emitted by the electro-optic display, but only forms light within a defined desired boundary.

[0014] exist Figure 2 and / or Figure 3 In the image, foils 100, 101, and 102 can be seen. The display portions of these foils form a protrusion 120, which includes a welding area 121. Within this welding area 121, foils 100, 101, and 102 are welded together, making the protrusion 120 very robust. The backplate 300 of the electro-optical display device 1 includes a recess 310 with boundaries 311 and 312. The protrusion 120 is positioned within the recess 310. The protrusion 120 is covered by a frame 200. In this way, foils 100, 101, and 102 are positioned correctly, and by welding within the welding area 121, movement of these foils relative to each other is prevented. Preferably, more than one display protrusion is present to optimize positioning and to hold foils 100, 101, and 102 in place even in the event of violent movement of the electro-optical display device 1. In some applications, a single protrusion 120 may be sufficient. Furthermore, the electro-optical display device 1 can be covered by a transparent cover (not shown), which can be optically bonded to the foil 100 and the frame 200, thereby providing additional security.

Claims

1. An electro-optic display device (1) comprising an electro-optic display and a plurality of foils (100, 101, 102) arranged vertically to each other and located in front of the electro-optic display such that the plurality of foils (100, 101, 102) are positioned between the electro-optic display and a potential viewer or observer of the electro-optic display device (1), the foils (100, 101, 102) comprising a centering feature (120) for centering the foils (100, 101, 102) within a frame (200) of the electro-optic display device (1), characterized in that, These foils (100, 101, 102) are connected in a linked manner, wherein these foils include a protrusion (120) as part of the centering feature, and these foils (100, 101, 102) are positioned by the protrusions (120) of adjacent foils arranged vertically to each other.

2. The electro-optical display device according to claim 1, characterized in that, The foils (100, 101, 102) are connected by welding to weld them together.

3. The electro-optic display device according to claim 2, characterized in that, These foils (100, 101, 102) are welded together in the area of ​​the centering feature (120).

4. The electro-optic display device according to any one of claims 1 to 3, characterized in that, These protrusions (120) are welded together.

5. The electro-optic display device according to claim 4, characterized in that, These protrusions (120) are positioned in recesses (310) located in the electro-optical display device (1).

6. The electro-optic display device according to claim 5, characterized in that, These recesses (310) are located in the back panel (300) of the electro-optical display (1).

Images