Display device with contact noise reduction device

Abstract

To minimize noise generation during the use of the display device, a display device (100) is proposed comprising a housing element (10) and a display device (15), wherein the housing element (10) has a pressure contact area (16) in which the housing element (10) is spaced from the display device (15) by a gap (S) to provide a movement space of the display device (15) relative to the housing element (10), wherein the housing element (10) has at least one contact structure (13a, 13b) in the pressure contact area (16), wherein when external pressure is applied to the display device (15) above a predetermined pressure, the housing element (10) contacts the display device (15) exclusively with the at least one contact structure (13a, 13b).

Description

[0001] The invention relates to a display device and a housing element designed for use in such a display device. State of the art

[0002] In display devices, which are intended for use in a vehicle, for example, a housing element, in particular a housing cover, is generally provided, which accommodates some of the components of the display device, as well as a glass with a frame element, which is arranged on an upper side of the housing element and covers a display device or a display of the display device. Such a display device is known, for example, from US2006262570A1.

[0003] In touch-sensitive display devices, the glass represents the user interface, which allows the user to enter inputs by touching or pressing the glass. Some such display devices are capable of providing haptic feedback, for example, in the form of vibrations, following a user input to mimic the feel of a movable control button. Such display devices require a gap between the housing element and the glass, including the frame element, to allow both input and the output of haptic feedback.

[0004] However, the gap between the housing element and the frame element or the glass can lead to noise generation due to rattling of the housing cover and / or the frame element if excessive pressure is applied to the glass and the frame element. Disclosure of the invention

[0005] The invention is therefore based on the object of minimizing the noise generated when using a touch-sensitive display device.

[0006] The object of the invention is achieved by a display device comprising a housing element and a display device, wherein the housing element has a pressure contact region in which the housing element is spaced from the display device by a gap to provide a movement space of the display device relative to the housing element, wherein the housing element has at least one contact structure in the pressure contact region, wherein upon external pressure being applied to the display device in the direction of the housing element above a predetermined pressure, the housing element contacts the display device exclusively with the at least one contact structure.

[0007] The display device can, in particular, be designed exclusively for displaying content. Alternatively, the display device can be a touch-sensitive display. In this case, the display device of the display device can comprise a display unit by means of which a user can make inputs into the display device on an input surface, which is, in particular, integrated into a display surface of the display device. In addition to the display unit, the display device can also comprise other components, such as, for example, a lighting device.

[0008] The external pressure can be applied, in particular, by a user input into the display device or onto the input surface. Furthermore, it is possible that the external pressure is applied by vibrations transmitted to the display device, which can lead to contact between the housing element and the display device in the pressure contact area.

[0009] The contact structure advantageously makes it possible to establish contact between the housing element and the display device in the event of excessive pressure being applied during a user input or when vibrations occur, preventing or minimizing noise generation due to rattling. This is achieved in particular by the contact structure being optimized with regard to noise generation, since contact between the display device and the housing element can only be established through the contact structure and, in particular, the display device does not rest flatly on the housing element in certain areas.

[0010] In the absence of pressure or when the pressure is below the predetermined pressure, a gap remains between the housing element and the display device in the pressure contact area. In particular, a much larger gap is provided between the housing element and the display device in all areas outside the pressure contact area, such that no direct contact occurs in these areas during use of the display device.

[0011] Preferably, the housing element and the display device can be connected to each other, particularly indirectly, in another area outside the pressure contact area. This connection is made, in particular, via additional components of the display device.

[0012] The predetermined force is, in particular, a force designed such that, when a force is applied below the predetermined force, a gap is always formed between the housing element or the contact structure and the display device. Only when a force is applied above the predetermined force can the contact structure contact the display device. This can be influenced, in particular, by a suitable choice of material for the housing element or the display device or by its design.

[0013] The display device may further comprise a display device. In particular, an input surface of the display device simultaneously represents a display surface of the display device. The display device is in particular integrated into the display device.

[0014] In particular, the contact structure is designed such that a contact surface between the display device and the housing element is smaller in area than a contact surface between the display device and the housing element without the contact structure.

[0015] Preferably, the at least one contact structure comprises at least one contact projection. The contact projection, in particular, provides a minimal contact surface, which minimizes noise generation.

[0016] Preferably, the at least one contact projection has a point-shaped or linear contact surface. This contact surface shape can particularly effectively prevent the formation of rattling noises.

[0017] The display device can be arranged, in particular, in a vehicle. In particular, the display device can be a component of an infotainment system of the vehicle.

[0018] Preferably, a plurality of contact projections can be provided in a contact structure. In particular, the contact projections can each have the same or different heights. Particularly in cases where the gap has a varying height, the height of a contact projection can be adapted to the height of the gap, so that a gap of constant height always exists between the housing element and the display device when no pressure is applied to the display device.

[0019] The contact projections preferably form a randomly formed structural pattern. A randomly formed structural pattern is understood in particular to mean that the heights of the contact projections, the position of the contact projections on the housing element, and / or the distances between the contact projections are selected randomly, in particular within predetermined limits for the aforementioned parameters. Alternatively, the contact projections are arranged next to one another in rows to form a sawtooth pattern. By arranging several contact projections in a row, the generation of noise can preferably be advantageously prevented and, at the same time, a sufficient support surface for the display device to rest on the housing element can be provided.

[0020] The display device preferably has a plurality of contact structures in the pressure contact area, wherein the contact structures are in particular identically formed. For example, two, three, four, five, or six contact structures are provided.

[0021] Preferably, the pressure contact area is at least one or more sub-areas of a partially or completely surrounding edge area of ​​the housing element. Alternatively, the pressure contact area is formed by a partially or completely surrounding edge area of ​​the display device.

[0022] Preferably, the edge or edge region extends circumferentially along the side surfaces or side edges of the display device or the housing element. In particular, the plurality of contact structures are arranged at equal spacing along the edge region.

[0023] The pressure contact area is preferably present in those areas where the gap is pronounced. Therefore, the gap is also preferably formed in at least one or more sub-areas of a partially or completely circumferential edge area of ​​the housing element.

[0024] The display device preferably comprises a frame element and a cover glass, wherein the frame element is arranged and in particular fastened to the cover glass, wherein the gap is arranged between the housing element and the frame element. The frame element covers the housing element, in particular in the edge region.

[0025] Preferably, the frame element comprises chrome or the frame element is made of chrome.

[0026] Preferably, the housing element and the contact structure are formed as a single piece. In particular, the housing element is manufactured together with the contact structure using an injection-molding process. In particular, the housing element is made of plastic.

[0027] Preferably, the display device does not include any additional noise-reducing components, such as felt, in the gap area. The contact structure is sufficient for noise reduction, allowing the number of components and production steps to be reduced.

[0028] The object of the invention is further achieved by a housing element designed for use in a display device having the aforementioned features.

[0029] The invention is explained in more detail below using exemplary embodiments. They show, in purely schematic representations: Fig. 1 a detailed view of the structure of a display device from the prior art, Fig. 2 a plan view of a housing element according to the invention, Fig. 3 a side view of the detail area A according to Fig. 2, and Fig. 4 a detailed view of the contact structure according to the invention between the housing element and the display device.

[0030] Fig. 1 shows a prior art display device 101. The display device 101 comprises a display device 15a and a housing element 10a. The housing element 10a is arranged, in particular, on a rear side of the display device 15a. An edge region of the housing element 10a borders the display device 15a in an edge region of the display device 15a, wherein the display device 15a comprises a frame element 11a in this region.

[0031] A gap S is arranged between the frame element 11a and the housing element 10a, circumferentially around an edge of the housing element 10a and along the frame element 11a. This gap serves in particular to provide a movement space for the display device 15a for outputting the haptic feedback.

[0032] Fig. Figure 2 shows a housing element 10 according to the invention of a display device 100 according to the invention. The housing element 10 has a peripheral edge region 12. A section A of this edge region 12 is shown in Fig. 2 marked.

[0033] Fig. 3 shows a detailed view of section A from Fig. 2. Two contact structures 13a, 13b are shown in the edge region 12 of the housing element 10. The contact structures 13a, 13b each have a plurality of contact projections 14, each arranged in a row. The contact projections 14 each have a tip, which represents the contact surfaces with the display device 15 (not shown here). Due to this configuration, the contact structures 13a, 13b have a sawtooth pattern in a side view.

[0034] Fig. 4 shows the display device 100 according to the invention. The display device 100 comprises the housing element 10 and a display device 15. The display device 15 comprises an input device with an input surface, onto which external pressure can be exerted upon the display device 15 as a result of an input by a user. The display device 15 comprises a glass element via which the user inputs the input. Furthermore, the display device 15 comprises a frame element 11, which accommodates or surrounds the glass element.

[0035] As in Fig. As shown in Figure 4, a gap S is formed in the edge region 12 of the housing element 10 between the housing element 10 and the frame element 11. Furthermore, in the region of the gap S, a pressure contact region 16 is formed between the housing element 10 and the frame element 11. The two contact structures 13a, 13b protrude into the gap S or the pressure contact region 16.

[0036] Fig. Figure 4 shows the display device 100 in a state in which no or only a slight pressure is applied to the display device 15. In this state, a distance is always present between the housing element 10 with the contact structures 13a, 13b and the frame element 11. Only upon application of a force greater than the predetermined force would the contact projections 14 contact the frame element 11.

[0037] When pressure is applied to the display device 15 or to an input surface of the display device 15, the display device 15 or the frame element 11 moves in the Z direction and toward the housing element 10. If the pressure is sufficiently high above the predetermined force, the contact structures 13a, 13b or the projections 14 contact the frame element 11, thus reducing the generation of noise. Accordingly, the gap S also extends in the Z direction. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2006262570A1

[0002]

Claims

[1] Display device (100) comprising a housing element (10) and a display device (15), wherein the housing element (10) has a pressure contact region (16) in which the housing element (10) is spaced from the display device (15) by a gap (S) to provide a movement space of the display device (15) relative to the housing element (10), wherein the housing element (10) has at least one contact structure (13a, 13b) in the pressure contact region (16), wherein upon external pressure being applied to the display device (15) in the direction of the housing element (10) above a predetermined pressure, the housing element (10) contacts the display device (15) exclusively with the at least one contact structure (13a, 13b). [2] Display device (100) according to claim 1, wherein the at least one contact structure (13a, 13b) comprises at least one contact projection (14). [3] Display device (100) according to claim 2, wherein the at least one contact projection (14) has a point-shaped or line-shaped contact surface. [4] Display device (100) according to one of the preceding claims, wherein the contact structure (13a, 13b) comprises a plurality of contact projections (14) [5] The display device (100) according to claim 4, wherein the contact projections (14) form a randomly formed structural pattern, or wherein the contact projections (14) are arranged side by side in a row to form a sawtooth pattern. [6] Display device (100) according to one of the preceding claims, comprising a plurality of contact structures (13a, 13b) in the pressure contact area (16), wherein the contact structures (13a, 13b) are in particular identically designed. [7] Display device (100) according to one of the preceding claims, wherein the display device (15) comprises a frame element (11) and a cover glass, wherein the frame element (11) is arranged on the cover glass, wherein the gap (S) is arranged between the housing element (10) and the frame element (11). [8] Display device (100) according to one of the preceding claims, wherein the pressure contact region (16) is at least one or more subregions of a partially or completely circumferential edge region (12) of the housing element (10), or wherein the pressure contact region (16) is formed by a circumferential edge region (12). [9] Display device (100) according to one of the preceding claims, wherein the housing element (10) and the at least one contact structure (13a, 13b) are formed in one piece. [10] Housing element (10) designed for use in a display device (100) according to one of the preceding claims.

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